diff --git a/src/secp256k1/src/bench_ecdh.c b/src/secp256k1/src/bench_ecdh.c
--- a/src/secp256k1/src/bench_ecdh.c
+++ b/src/secp256k1/src/bench_ecdh.c
@@ -15,11 +15,11 @@
     secp256k1_context *ctx;
     secp256k1_pubkey point;
     unsigned char scalar[32];
-} bench_ecdh_t;
+} bench_ecdh;
 
 static void bench_ecdh_setup(void* arg) {
     int i;
-    bench_ecdh_t *data = (bench_ecdh_t*)arg;
+    bench_ecdh *data = (bench_ecdh*)arg;
     const unsigned char point[] = {
         0x03,
         0x54, 0x94, 0xc1, 0x5d, 0x32, 0x09, 0x97, 0x06,
@@ -39,7 +39,7 @@
 static void bench_ecdh(void* arg) {
     int i;
     unsigned char res[32];
-    bench_ecdh_t *data = (bench_ecdh_t*)arg;
+    bench_ecdh *data = (bench_ecdh*)arg;
 
     for (i = 0; i < 20000; i++) {
         CHECK(secp256k1_ecdh(data->ctx, res, &data->point, data->scalar) == 1);
@@ -47,7 +47,7 @@
 }
 
 int main(void) {
-    bench_ecdh_t data;
+    bench_ecdh data;
 
     run_benchmark("ecdh", bench_ecdh, bench_ecdh_setup, NULL, &data, 10, 20000);
     return 0;
diff --git a/src/secp256k1/src/bench_internal.c b/src/secp256k1/src/bench_internal.c
--- a/src/secp256k1/src/bench_internal.c
+++ b/src/secp256k1/src/bench_internal.c
@@ -25,10 +25,10 @@
     secp256k1_gej gej_x, gej_y;
     unsigned char data[64];
     int wnaf[256];
-} bench_inv_t;
+} bench_inv;
 
 void bench_setup(void* arg) {
-    bench_inv_t *data = (bench_inv_t*)arg;
+    bench_inv *data = (bench_inv*)arg;
 
     static const unsigned char init_x[32] = {
         0x02, 0x03, 0x05, 0x07, 0x0b, 0x0d, 0x11, 0x13,
@@ -58,7 +58,7 @@
 
 void bench_scalar_add(void* arg) {
     int i;
-    bench_inv_t *data = (bench_inv_t*)arg;
+    bench_inv *data = (bench_inv*)arg;
 
     for (i = 0; i < 2000000; i++) {
         secp256k1_scalar_add(&data->scalar_x, &data->scalar_x, &data->scalar_y);
@@ -67,7 +67,7 @@
 
 void bench_scalar_negate(void* arg) {
     int i;
-    bench_inv_t *data = (bench_inv_t*)arg;
+    bench_inv *data = (bench_inv*)arg;
 
     for (i = 0; i < 2000000; i++) {
         secp256k1_scalar_negate(&data->scalar_x, &data->scalar_x);
@@ -76,7 +76,7 @@
 
 void bench_scalar_sqr(void* arg) {
     int i;
-    bench_inv_t *data = (bench_inv_t*)arg;
+    bench_inv *data = (bench_inv*)arg;
 
     for (i = 0; i < 200000; i++) {
         secp256k1_scalar_sqr(&data->scalar_x, &data->scalar_x);
@@ -85,7 +85,7 @@
 
 void bench_scalar_mul(void* arg) {
     int i;
-    bench_inv_t *data = (bench_inv_t*)arg;
+    bench_inv *data = (bench_inv*)arg;
 
     for (i = 0; i < 200000; i++) {
         secp256k1_scalar_mul(&data->scalar_x, &data->scalar_x, &data->scalar_y);
@@ -95,7 +95,7 @@
 #ifdef USE_ENDOMORPHISM
 void bench_scalar_split(void* arg) {
     int i;
-    bench_inv_t *data = (bench_inv_t*)arg;
+    bench_inv *data = (bench_inv*)arg;
 
     for (i = 0; i < 20000; i++) {
         secp256k1_scalar l, r;
@@ -107,7 +107,7 @@
 
 void bench_scalar_inverse(void* arg) {
     int i;
-    bench_inv_t *data = (bench_inv_t*)arg;
+    bench_inv *data = (bench_inv*)arg;
 
     for (i = 0; i < 2000; i++) {
         secp256k1_scalar_inverse(&data->scalar_x, &data->scalar_x);
@@ -117,7 +117,7 @@
 
 void bench_scalar_inverse_var(void* arg) {
     int i;
-    bench_inv_t *data = (bench_inv_t*)arg;
+    bench_inv *data = (bench_inv*)arg;
 
     for (i = 0; i < 2000; i++) {
         secp256k1_scalar_inverse_var(&data->scalar_x, &data->scalar_x);
@@ -127,7 +127,7 @@
 
 void bench_field_normalize(void* arg) {
     int i;
-    bench_inv_t *data = (bench_inv_t*)arg;
+    bench_inv *data = (bench_inv*)arg;
 
     for (i = 0; i < 2000000; i++) {
         secp256k1_fe_normalize(&data->fe_x);
@@ -136,7 +136,7 @@
 
 void bench_field_normalize_weak(void* arg) {
     int i;
-    bench_inv_t *data = (bench_inv_t*)arg;
+    bench_inv *data = (bench_inv*)arg;
 
     for (i = 0; i < 2000000; i++) {
         secp256k1_fe_normalize_weak(&data->fe_x);
@@ -145,7 +145,7 @@
 
 void bench_field_mul(void* arg) {
     int i;
-    bench_inv_t *data = (bench_inv_t*)arg;
+    bench_inv *data = (bench_inv*)arg;
 
     for (i = 0; i < 200000; i++) {
         secp256k1_fe_mul(&data->fe_x, &data->fe_x, &data->fe_y);
@@ -154,7 +154,7 @@
 
 void bench_field_sqr(void* arg) {
     int i;
-    bench_inv_t *data = (bench_inv_t*)arg;
+    bench_inv *data = (bench_inv*)arg;
 
     for (i = 0; i < 200000; i++) {
         secp256k1_fe_sqr(&data->fe_x, &data->fe_x);
@@ -163,7 +163,7 @@
 
 void bench_field_inverse(void* arg) {
     int i;
-    bench_inv_t *data = (bench_inv_t*)arg;
+    bench_inv *data = (bench_inv*)arg;
 
     for (i = 0; i < 20000; i++) {
         secp256k1_fe_inv(&data->fe_x, &data->fe_x);
@@ -173,7 +173,7 @@
 
 void bench_field_inverse_var(void* arg) {
     int i;
-    bench_inv_t *data = (bench_inv_t*)arg;
+    bench_inv *data = (bench_inv*)arg;
 
     for (i = 0; i < 20000; i++) {
         secp256k1_fe_inv_var(&data->fe_x, &data->fe_x);
@@ -183,7 +183,7 @@
 
 void bench_field_sqrt(void* arg) {
     int i;
-    bench_inv_t *data = (bench_inv_t*)arg;
+    bench_inv *data = (bench_inv*)arg;
 
     for (i = 0; i < 20000; i++) {
         secp256k1_fe_sqrt(&data->fe_x, &data->fe_x);
@@ -193,7 +193,7 @@
 
 void bench_group_double_var(void* arg) {
     int i;
-    bench_inv_t *data = (bench_inv_t*)arg;
+    bench_inv *data = (bench_inv*)arg;
 
     for (i = 0; i < 200000; i++) {
         secp256k1_gej_double_var(&data->gej_x, &data->gej_x, NULL);
@@ -202,7 +202,7 @@
 
 void bench_group_add_var(void* arg) {
     int i;
-    bench_inv_t *data = (bench_inv_t*)arg;
+    bench_inv *data = (bench_inv*)arg;
 
     for (i = 0; i < 200000; i++) {
         secp256k1_gej_add_var(&data->gej_x, &data->gej_x, &data->gej_y, NULL);
@@ -211,7 +211,7 @@
 
 void bench_group_add_affine(void* arg) {
     int i;
-    bench_inv_t *data = (bench_inv_t*)arg;
+    bench_inv *data = (bench_inv*)arg;
 
     for (i = 0; i < 200000; i++) {
         secp256k1_gej_add_ge(&data->gej_x, &data->gej_x, &data->ge_y);
@@ -220,7 +220,7 @@
 
 void bench_group_add_affine_var(void* arg) {
     int i;
-    bench_inv_t *data = (bench_inv_t*)arg;
+    bench_inv *data = (bench_inv*)arg;
 
     for (i = 0; i < 200000; i++) {
         secp256k1_gej_add_ge_var(&data->gej_x, &data->gej_x, &data->ge_y, NULL);
@@ -229,7 +229,7 @@
 
 void bench_group_jacobi_var(void* arg) {
     int i;
-    bench_inv_t *data = (bench_inv_t*)arg;
+    bench_inv *data = (bench_inv*)arg;
 
     for (i = 0; i < 20000; i++) {
         secp256k1_gej_has_quad_y_var(&data->gej_x);
@@ -238,7 +238,7 @@
 
 void bench_ecmult_wnaf(void* arg) {
     int i;
-    bench_inv_t *data = (bench_inv_t*)arg;
+    bench_inv *data = (bench_inv*)arg;
 
     for (i = 0; i < 20000; i++) {
         secp256k1_ecmult_wnaf(data->wnaf, 256, &data->scalar_x, WINDOW_A);
@@ -248,7 +248,7 @@
 
 void bench_wnaf_const(void* arg) {
     int i;
-    bench_inv_t *data = (bench_inv_t*)arg;
+    bench_inv *data = (bench_inv*)arg;
 
     for (i = 0; i < 20000; i++) {
         secp256k1_wnaf_const(data->wnaf, data->scalar_x, WINDOW_A);
@@ -259,8 +259,8 @@
 
 void bench_sha256(void* arg) {
     int i;
-    bench_inv_t *data = (bench_inv_t*)arg;
-    secp256k1_sha256_t sha;
+    bench_inv *data = (bench_inv*)arg;
+    secp256k1_sha256 sha;
 
     for (i = 0; i < 20000; i++) {
         secp256k1_sha256_initialize(&sha);
@@ -271,8 +271,8 @@
 
 void bench_hmac_sha256(void* arg) {
     int i;
-    bench_inv_t *data = (bench_inv_t*)arg;
-    secp256k1_hmac_sha256_t hmac;
+    bench_inv *data = (bench_inv*)arg;
+    secp256k1_hmac_sha256 hmac;
 
     for (i = 0; i < 20000; i++) {
         secp256k1_hmac_sha256_initialize(&hmac, data->data, 32);
@@ -283,8 +283,8 @@
 
 void bench_rfc6979_hmac_sha256(void* arg) {
     int i;
-    bench_inv_t *data = (bench_inv_t*)arg;
-    secp256k1_rfc6979_hmac_sha256_t rng;
+    bench_inv *data = (bench_inv*)arg;
+    secp256k1_rfc6979_hmac_sha256 rng;
 
     for (i = 0; i < 20000; i++) {
         secp256k1_rfc6979_hmac_sha256_initialize(&rng, data->data, 64);
@@ -311,7 +311,7 @@
 #ifndef USE_NUM_NONE
 void bench_num_jacobi(void* arg) {
     int i;
-    bench_inv_t *data = (bench_inv_t*)arg;
+    bench_inv *data = (bench_inv*)arg;
     secp256k1_num nx, norder;
 
     secp256k1_scalar_get_num(&nx, &data->scalar_x);
@@ -340,7 +340,7 @@
 }
 
 int main(int argc, char **argv) {
-    bench_inv_t data;
+    bench_inv data;
     if (have_flag(argc, argv, "scalar") || have_flag(argc, argv, "add")) run_benchmark("scalar_add", bench_scalar_add, bench_setup, NULL, &data, 10, 2000000);
     if (have_flag(argc, argv, "scalar") || have_flag(argc, argv, "negate")) run_benchmark("scalar_negate", bench_scalar_negate, bench_setup, NULL, &data, 10, 2000000);
     if (have_flag(argc, argv, "scalar") || have_flag(argc, argv, "sqr")) run_benchmark("scalar_sqr", bench_scalar_sqr, bench_setup, NULL, &data, 10, 200000);
diff --git a/src/secp256k1/src/bench_recover.c b/src/secp256k1/src/bench_recover.c
--- a/src/secp256k1/src/bench_recover.c
+++ b/src/secp256k1/src/bench_recover.c
@@ -13,11 +13,11 @@
     secp256k1_context *ctx;
     unsigned char msg[32];
     unsigned char sig[64];
-} bench_recover_t;
+} bench_recover;
 
 void bench_recover(void* arg) {
     int i;
-    bench_recover_t *data = (bench_recover_t*)arg;
+    bench_recover *data = (bench_recover*)arg;
     secp256k1_pubkey pubkey;
     unsigned char pubkeyc[33];
 
@@ -38,7 +38,7 @@
 
 void bench_recover_setup(void* arg) {
     int i;
-    bench_recover_t *data = (bench_recover_t*)arg;
+    bench_recover *data = (bench_recover*)arg;
 
     for (i = 0; i < 32; i++) {
         data->msg[i] = 1 + i;
@@ -49,7 +49,7 @@
 }
 
 int main(void) {
-    bench_recover_t data;
+    bench_recover data;
 
     data.ctx = secp256k1_context_create(SECP256K1_CONTEXT_VERIFY);
 
diff --git a/src/secp256k1/src/bench_sign.c b/src/secp256k1/src/bench_sign.c
--- a/src/secp256k1/src/bench_sign.c
+++ b/src/secp256k1/src/bench_sign.c
@@ -12,11 +12,11 @@
     secp256k1_context* ctx;
     unsigned char msg[32];
     unsigned char key[32];
-} bench_sign_t;
+} bench_sign;
 
 static void bench_sign_setup(void* arg) {
     int i;
-    bench_sign_t *data = (bench_sign_t*)arg;
+    bench_sign *data = (bench_sign*)arg;
 
     for (i = 0; i < 32; i++) {
         data->msg[i] = i + 1;
@@ -26,9 +26,9 @@
     }
 }
 
-static void bench_sign(void* arg) {
+static void bench_sign_run(void* arg) {
     int i;
-    bench_sign_t *data = (bench_sign_t*)arg;
+    bench_sign *data = (bench_sign*)arg;
 
     unsigned char sig[74];
     for (i = 0; i < 20000; i++) {
@@ -45,11 +45,11 @@
 }
 
 int main(void) {
-    bench_sign_t data;
+    bench_sign data;
 
     data.ctx = secp256k1_context_create(SECP256K1_CONTEXT_SIGN);
 
-    run_benchmark("ecdsa_sign", bench_sign, bench_sign_setup, NULL, &data, 10, 20000);
+    run_benchmark("ecdsa_sign", bench_sign_run, bench_sign_setup, NULL, &data, 10, 20000);
 
     secp256k1_context_destroy(data.ctx);
     return 0;
diff --git a/src/secp256k1/src/ecmult_gen_impl.h b/src/secp256k1/src/ecmult_gen_impl.h
--- a/src/secp256k1/src/ecmult_gen_impl.h
+++ b/src/secp256k1/src/ecmult_gen_impl.h
@@ -161,7 +161,7 @@
     secp256k1_gej gb;
     secp256k1_fe s;
     unsigned char nonce32[32];
-    secp256k1_rfc6979_hmac_sha256_t rng;
+    secp256k1_rfc6979_hmac_sha256 rng;
     int retry;
     unsigned char keydata[64] = {0};
     if (seed32 == NULL) {
diff --git a/src/secp256k1/src/hash.h b/src/secp256k1/src/hash.h
--- a/src/secp256k1/src/hash.h
+++ b/src/secp256k1/src/hash.h
@@ -14,28 +14,28 @@
     uint32_t s[8];
     uint32_t buf[16]; /* In big endian */
     size_t bytes;
-} secp256k1_sha256_t;
+} secp256k1_sha256;
 
-static void secp256k1_sha256_initialize(secp256k1_sha256_t *hash);
-static void secp256k1_sha256_write(secp256k1_sha256_t *hash, const unsigned char *data, size_t size);
-static void secp256k1_sha256_finalize(secp256k1_sha256_t *hash, unsigned char *out32);
+static void secp256k1_sha256_initialize(secp256k1_sha256 *hash);
+static void secp256k1_sha256_write(secp256k1_sha256 *hash, const unsigned char *data, size_t size);
+static void secp256k1_sha256_finalize(secp256k1_sha256 *hash, unsigned char *out32);
 
 typedef struct {
-    secp256k1_sha256_t inner, outer;
-} secp256k1_hmac_sha256_t;
+    secp256k1_sha256 inner, outer;
+} secp256k1_hmac_sha256;
 
-static void secp256k1_hmac_sha256_initialize(secp256k1_hmac_sha256_t *hash, const unsigned char *key, size_t size);
-static void secp256k1_hmac_sha256_write(secp256k1_hmac_sha256_t *hash, const unsigned char *data, size_t size);
-static void secp256k1_hmac_sha256_finalize(secp256k1_hmac_sha256_t *hash, unsigned char *out32);
+static void secp256k1_hmac_sha256_initialize(secp256k1_hmac_sha256 *hash, const unsigned char *key, size_t size);
+static void secp256k1_hmac_sha256_write(secp256k1_hmac_sha256 *hash, const unsigned char *data, size_t size);
+static void secp256k1_hmac_sha256_finalize(secp256k1_hmac_sha256 *hash, unsigned char *out32);
 
 typedef struct {
     unsigned char v[32];
     unsigned char k[32];
     int retry;
-} secp256k1_rfc6979_hmac_sha256_t;
+} secp256k1_rfc6979_hmac_sha256;
 
-static void secp256k1_rfc6979_hmac_sha256_initialize(secp256k1_rfc6979_hmac_sha256_t *rng, const unsigned char *key, size_t keylen);
-static void secp256k1_rfc6979_hmac_sha256_generate(secp256k1_rfc6979_hmac_sha256_t *rng, unsigned char *out, size_t outlen);
-static void secp256k1_rfc6979_hmac_sha256_finalize(secp256k1_rfc6979_hmac_sha256_t *rng);
+static void secp256k1_rfc6979_hmac_sha256_initialize(secp256k1_rfc6979_hmac_sha256 *rng, const unsigned char *key, size_t keylen);
+static void secp256k1_rfc6979_hmac_sha256_generate(secp256k1_rfc6979_hmac_sha256 *rng, unsigned char *out, size_t outlen);
+static void secp256k1_rfc6979_hmac_sha256_finalize(secp256k1_rfc6979_hmac_sha256 *rng);
 
 #endif /* SECP256K1_HASH_H */
diff --git a/src/secp256k1/src/hash_impl.h b/src/secp256k1/src/hash_impl.h
--- a/src/secp256k1/src/hash_impl.h
+++ b/src/secp256k1/src/hash_impl.h
@@ -33,7 +33,7 @@
 #define BE32(p) ((((p) & 0xFF) << 24) | (((p) & 0xFF00) << 8) | (((p) & 0xFF0000) >> 8) | (((p) & 0xFF000000) >> 24))
 #endif
 
-static void secp256k1_sha256_initialize(secp256k1_sha256_t *hash) {
+static void secp256k1_sha256_initialize(secp256k1_sha256 *hash) {
     hash->s[0] = 0x6a09e667ul;
     hash->s[1] = 0xbb67ae85ul;
     hash->s[2] = 0x3c6ef372ul;
@@ -128,7 +128,7 @@
     s[7] += h;
 }
 
-static void secp256k1_sha256_write(secp256k1_sha256_t *hash, const unsigned char *data, size_t len) {
+static void secp256k1_sha256_write(secp256k1_sha256 *hash, const unsigned char *data, size_t len) {
     size_t bufsize = hash->bytes & 0x3F;
     hash->bytes += len;
     while (bufsize + len >= 64) {
@@ -145,7 +145,7 @@
     }
 }
 
-static void secp256k1_sha256_finalize(secp256k1_sha256_t *hash, unsigned char *out32) {
+static void secp256k1_sha256_finalize(secp256k1_sha256 *hash, unsigned char *out32) {
     static const unsigned char pad[64] = {0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
     uint32_t sizedesc[2];
     uint32_t out[8];
@@ -161,14 +161,14 @@
     memcpy(out32, (const unsigned char*)out, 32);
 }
 
-static void secp256k1_hmac_sha256_initialize(secp256k1_hmac_sha256_t *hash, const unsigned char *key, size_t keylen) {
+static void secp256k1_hmac_sha256_initialize(secp256k1_hmac_sha256 *hash, const unsigned char *key, size_t keylen) {
     int n;
     unsigned char rkey[64];
     if (keylen <= 64) {
         memcpy(rkey, key, keylen);
         memset(rkey + keylen, 0, 64 - keylen);
     } else {
-        secp256k1_sha256_t sha256;
+        secp256k1_sha256 sha256;
         secp256k1_sha256_initialize(&sha256);
         secp256k1_sha256_write(&sha256, key, keylen);
         secp256k1_sha256_finalize(&sha256, rkey);
@@ -189,11 +189,11 @@
     memset(rkey, 0, 64);
 }
 
-static void secp256k1_hmac_sha256_write(secp256k1_hmac_sha256_t *hash, const unsigned char *data, size_t size) {
+static void secp256k1_hmac_sha256_write(secp256k1_hmac_sha256 *hash, const unsigned char *data, size_t size) {
     secp256k1_sha256_write(&hash->inner, data, size);
 }
 
-static void secp256k1_hmac_sha256_finalize(secp256k1_hmac_sha256_t *hash, unsigned char *out32) {
+static void secp256k1_hmac_sha256_finalize(secp256k1_hmac_sha256 *hash, unsigned char *out32) {
     unsigned char temp[32];
     secp256k1_sha256_finalize(&hash->inner, temp);
     secp256k1_sha256_write(&hash->outer, temp, 32);
@@ -202,8 +202,8 @@
 }
 
 
-static void secp256k1_rfc6979_hmac_sha256_initialize(secp256k1_rfc6979_hmac_sha256_t *rng, const unsigned char *key, size_t keylen) {
-    secp256k1_hmac_sha256_t hmac;
+static void secp256k1_rfc6979_hmac_sha256_initialize(secp256k1_rfc6979_hmac_sha256 *rng, const unsigned char *key, size_t keylen) {
+    secp256k1_hmac_sha256 hmac;
     static const unsigned char zero[1] = {0x00};
     static const unsigned char one[1] = {0x01};
 
@@ -232,11 +232,11 @@
     rng->retry = 0;
 }
 
-static void secp256k1_rfc6979_hmac_sha256_generate(secp256k1_rfc6979_hmac_sha256_t *rng, unsigned char *out, size_t outlen) {
+static void secp256k1_rfc6979_hmac_sha256_generate(secp256k1_rfc6979_hmac_sha256 *rng, unsigned char *out, size_t outlen) {
     /* RFC6979 3.2.h. */
     static const unsigned char zero[1] = {0x00};
     if (rng->retry) {
-        secp256k1_hmac_sha256_t hmac;
+        secp256k1_hmac_sha256 hmac;
         secp256k1_hmac_sha256_initialize(&hmac, rng->k, 32);
         secp256k1_hmac_sha256_write(&hmac, rng->v, 32);
         secp256k1_hmac_sha256_write(&hmac, zero, 1);
@@ -247,7 +247,7 @@
     }
 
     while (outlen > 0) {
-        secp256k1_hmac_sha256_t hmac;
+        secp256k1_hmac_sha256 hmac;
         int now = outlen;
         secp256k1_hmac_sha256_initialize(&hmac, rng->k, 32);
         secp256k1_hmac_sha256_write(&hmac, rng->v, 32);
@@ -263,7 +263,7 @@
     rng->retry = 1;
 }
 
-static void secp256k1_rfc6979_hmac_sha256_finalize(secp256k1_rfc6979_hmac_sha256_t *rng) {
+static void secp256k1_rfc6979_hmac_sha256_finalize(secp256k1_rfc6979_hmac_sha256 *rng) {
     memset(rng->k, 0, 32);
     memset(rng->v, 0, 32);
     rng->retry = 0;
diff --git a/src/secp256k1/src/modules/ecdh/main_impl.h b/src/secp256k1/src/modules/ecdh/main_impl.h
--- a/src/secp256k1/src/modules/ecdh/main_impl.h
+++ b/src/secp256k1/src/modules/ecdh/main_impl.h
@@ -28,7 +28,7 @@
     } else {
         unsigned char x[32];
         unsigned char y[1];
-        secp256k1_sha256_t sha;
+        secp256k1_sha256 sha;
 
         secp256k1_ecmult_const(&res, &pt, &s);
         secp256k1_ge_set_gej(&pt, &res);
diff --git a/src/secp256k1/src/modules/ecdh/tests_impl.h b/src/secp256k1/src/modules/ecdh/tests_impl.h
--- a/src/secp256k1/src/modules/ecdh/tests_impl.h
+++ b/src/secp256k1/src/modules/ecdh/tests_impl.h
@@ -44,7 +44,7 @@
     s_one[31] = 1;
     /* Check against pubkey creation when the basepoint is the generator */
     for (i = 0; i < 100; ++i) {
-        secp256k1_sha256_t sha;
+        secp256k1_sha256 sha;
         unsigned char s_b32[32];
         unsigned char output_ecdh[32];
         unsigned char output_ser[32];
diff --git a/src/secp256k1/src/secp256k1.c b/src/secp256k1/src/secp256k1.c
--- a/src/secp256k1/src/secp256k1.c
+++ b/src/secp256k1/src/secp256k1.c
@@ -310,7 +310,7 @@
 static int nonce_function_rfc6979(unsigned char *nonce32, const unsigned char *msg32, const unsigned char *key32, const unsigned char *algo16, void *data, unsigned int counter) {
    unsigned char keydata[112];
    int keylen = 64;
-   secp256k1_rfc6979_hmac_sha256_t rng;
+   secp256k1_rfc6979_hmac_sha256 rng;
    unsigned int i;
    /* We feed a byte array to the PRNG as input, consisting of:
     * - the private key (32 bytes) and message (32 bytes), see RFC 6979 3.2d.
diff --git a/src/secp256k1/src/testrand_impl.h b/src/secp256k1/src/testrand_impl.h
--- a/src/secp256k1/src/testrand_impl.h
+++ b/src/secp256k1/src/testrand_impl.h
@@ -13,7 +13,7 @@
 #include "testrand.h"
 #include "hash.h"
 
-static secp256k1_rfc6979_hmac_sha256_t secp256k1_test_rng;
+static secp256k1_rfc6979_hmac_sha256 secp256k1_test_rng;
 static uint32_t secp256k1_test_rng_precomputed[8];
 static int secp256k1_test_rng_precomputed_used = 8;
 static uint64_t secp256k1_test_rng_integer;
diff --git a/src/secp256k1/src/tests.c b/src/secp256k1/src/tests.c
--- a/src/secp256k1/src/tests.c
+++ b/src/secp256k1/src/tests.c
@@ -270,7 +270,7 @@
     int i;
     for (i = 0; i < 8; i++) {
         unsigned char out[32];
-        secp256k1_sha256_t hasher;
+        secp256k1_sha256 hasher;
         secp256k1_sha256_initialize(&hasher);
         secp256k1_sha256_write(&hasher, (const unsigned char*)(inputs[i]), strlen(inputs[i]));
         secp256k1_sha256_finalize(&hasher, out);
@@ -313,7 +313,7 @@
     };
     int i;
     for (i = 0; i < 6; i++) {
-        secp256k1_hmac_sha256_t hasher;
+        secp256k1_hmac_sha256 hasher;
         unsigned char out[32];
         secp256k1_hmac_sha256_initialize(&hasher, (const unsigned char*)(keys[i]), strlen(keys[i]));
         secp256k1_hmac_sha256_write(&hasher, (const unsigned char*)(inputs[i]), strlen(inputs[i]));
@@ -345,7 +345,7 @@
         {0x75, 0x97, 0x88, 0x7c, 0xbd, 0x76, 0x32, 0x1f, 0x32, 0xe3, 0x04, 0x40, 0x67, 0x9a, 0x22, 0xcf, 0x7f, 0x8d, 0x9d, 0x2e, 0xac, 0x39, 0x0e, 0x58, 0x1f, 0xea, 0x09, 0x1c, 0xe2, 0x02, 0xba, 0x94}
     };
 
-    secp256k1_rfc6979_hmac_sha256_t rng;
+    secp256k1_rfc6979_hmac_sha256 rng;
     unsigned char out[32];
     int i;