diff --git a/src/pubkey.cpp b/src/pubkey.cpp
--- a/src/pubkey.cpp
+++ b/src/pubkey.cpp
@@ -178,8 +178,8 @@
 
     secp256k1_pubkey pubkey;
     secp256k1_ecdsa_signature sig;
-    if (!secp256k1_ec_pubkey_parse(secp256k1_context_verify, &pubkey,
-                                   &(*this)[0], size())) {
+    if (!secp256k1_ec_pubkey_parse(secp256k1_context_verify, &pubkey, vch,
+                                   size())) {
         return false;
     }
     if (!ecdsa_signature_parse_der_lax(secp256k1_context_verify, &sig,
@@ -247,8 +247,8 @@
         return false;
     }
     secp256k1_pubkey pubkey;
-    return secp256k1_ec_pubkey_parse(secp256k1_context_verify, &pubkey,
-                                     &(*this)[0], size());
+    return secp256k1_ec_pubkey_parse(secp256k1_context_verify, &pubkey, vch,
+                                     size());
 }
 
 bool CPubKey::Decompress() {
@@ -256,8 +256,8 @@
         return false;
     }
     secp256k1_pubkey pubkey;
-    if (!secp256k1_ec_pubkey_parse(secp256k1_context_verify, &pubkey,
-                                   &(*this)[0], size())) {
+    if (!secp256k1_ec_pubkey_parse(secp256k1_context_verify, &pubkey, vch,
+                                   size())) {
         return false;
     }
     uint8_t pub[PUBLIC_KEY_SIZE];
@@ -277,8 +277,8 @@
     BIP32Hash(cc, nChild, *begin(), begin() + 1, out);
     memcpy(ccChild.begin(), out + 32, 32);
     secp256k1_pubkey pubkey;
-    if (!secp256k1_ec_pubkey_parse(secp256k1_context_verify, &pubkey,
-                                   &(*this)[0], size())) {
+    if (!secp256k1_ec_pubkey_parse(secp256k1_context_verify, &pubkey, vch,
+                                   size())) {
         return false;
     }
     if (!secp256k1_ec_pubkey_tweak_add(secp256k1_context_verify, &pubkey,