diff --git a/include/netinet/in.h b/include/netinet/in.h
index 154f785e2c7..a2e0e6ff665 100644
--- a/include/netinet/in.h
+++ b/include/netinet/in.h
@@ -201,7 +201,7 @@
   ((a)->s6_addr[0] == 0xff)
 
 #define IN6_IS_ADDR_LINKLOCAL(a) \
-  ((a)->s6_addr16[0] & HTONS(0xffc0) == HTONS(0xfe80))
+  (((a)->s6_addr16[0] & HTONS(0xffc0)) == HTONS(0xfe80))
 
 #define IN6_IS_ADDR_LOOPBACK(a) \
   ((a)->s6_addr32[0] == 0 && \