diff --git a/src/openvpn/crypto_openssl.c b/src/openvpn/crypto_openssl.c
index 29c5fa6..e6abd8f 100644
--- a/src/openvpn/crypto_openssl.c
+++ b/src/openvpn/crypto_openssl.c
@@ -1172,21 +1172,12 @@
     HMAC_CTX_reset(ctx);
 }
 
-#if defined(__GNUC__) || defined(__clang__)
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wconversion"
-#endif
-
 int
 hmac_ctx_size(HMAC_CTX *ctx)
 {
-    return HMAC_size(ctx);
+    return (int)HMAC_size(ctx);
 }
 
-#if defined(__GNUC__) || defined(__clang__)
-#pragma GCC diagnostic pop
-#endif
-
 void
 hmac_ctx_reset(HMAC_CTX *ctx)
 {