diff --git a/src/secp256k1/src/ecdsa_impl.h b/src/secp256k1/src/ecdsa_impl.h
--- a/src/secp256k1/src/ecdsa_impl.h
+++ b/src/secp256k1/src/ecdsa_impl.h
@@ -81,8 +81,6 @@
         return -1;
     }
     while (lenleft > 0) {
-        if ((ret >> ((sizeof(size_t) - 1) * 8)) != 0) {
-        }
         ret = (ret << 8) | **sigp;
         if (ret + lenleft > (size_t)(sigend - *sigp)) {
             /* Result exceeds the length of the passed array. */