diff --git a/lib/md5.c b/lib/md5.c
index 80301a141..3096602b7 100644
--- a/lib/md5.c
+++ b/lib/md5.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -484,6 +484,11 @@ static void MD5_Final(unsigned char *result, MD5_CTX *ctx)
 
 #endif /* CRYPTO LIBS */
 
+/* Disable this picky gcc-8 compiler warning */
+#if defined(__GNUC__) && (__GNUC__ >= 8)
+#pragma GCC diagnostic ignored "-Wcast-function-type"
+#endif
+
 const HMAC_params Curl_HMAC_MD5[] = {
   {
     (HMAC_hinit_func) MD5_Init,           /* Hash initialization function. */
diff --git a/src/tool_metalink.c b/src/tool_metalink.c
index 91c5878c9..03f159745 100644
--- a/src/tool_metalink.c
+++ b/src/tool_metalink.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -461,6 +461,11 @@ static void SHA256_Final(unsigned char digest[32], SHA256_CTX *ctx)
 
 #endif /* CRYPTO LIBS */
 
+/* Disable this picky gcc-8 compiler warning */
+#if defined(__GNUC__) && (__GNUC__ >= 8)
+#pragma GCC diagnostic ignored "-Wcast-function-type"
+#endif
+
 const digest_params MD5_DIGEST_PARAMS[] = {
   {
     (Curl_digest_init_func) MD5_Init,