diff --git a/lib/vquic/vquic.c b/lib/vquic/vquic.c
index 715328bc9e..16bfe4ccd1 100644
--- a/lib/vquic/vquic.c
+++ b/lib/vquic/vquic.c
@@ -328,13 +328,13 @@ static size_t msghdr_get_udp_gro(struct msghdr *msg)
   struct cmsghdr *cmsg;
 
   /* Workaround musl CMSG_NXTHDR issue */
-#ifndef __GLIBC__
+#if defined(__clang__) && !defined(__GLIBC__)
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wsign-compare"
 #pragma clang diagnostic ignored "-Wcast-align"
 #endif
   for(cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
-#ifndef __GLIBC__
+#if defined(__clang__) && !defined(__GLIBC__)
 #pragma clang diagnostic pop
 #endif
     if(cmsg->cmsg_level == SOL_UDP && cmsg->cmsg_type == UDP_GRO) {