diff --git a/src/core/ipv6/ip6_frag.c b/src/core/ipv6/ip6_frag.c
index abb32733..8a2f8204 100644
--- a/src/core/ipv6/ip6_frag.c
+++ b/src/core/ipv6/ip6_frag.c
@@ -545,7 +545,7 @@ nullreturn:
   return NULL;
 }
 
-#endif /* LWIP_IPV6 ^^ LWIP_IPV6_REASS */
+#endif /* LWIP_IPV6 && LWIP_IPV6_REASS */
 
 #if LWIP_IPV6 && LWIP_IPV6_FRAG