diff --git a/include/net/ip6_route.h b/include/net/ip6_route.h
index b69c16cbbf71..f7543c095b33 100644
--- a/include/net/ip6_route.h
+++ b/include/net/ip6_route.h
@@ -16,7 +16,7 @@ struct route_info {
 				reserved_h:3;
 #endif
 	__be32			lifetime;
-	__u8			prefix[0];	/* 0,8 or 16 */
+	__u8			prefix[];	/* 0,8 or 16 */
 };
 
 #include <net/addrconf.h>