1 files changed, 3 insertions, 3 deletions
diff --git a/util.h b/util.h
index 800a91d..add4c1e 100644
--- a/util.h
+++ b/util.h
@@ -144,9 +144,9 @@ enum {
 		.daddr		= IN6ADDR_ANY_INIT,			\
 	}
 
-#define RCVBUF_BIG		(2 * 1024 * 1024)
-#define SNDBUF_BIG		(4 * 1024 * 1024)
-#define SNDBUF_SMALL		(128 * 1024)
+#define RCVBUF_BIG		(2UL * 1024 * 1024)
+#define SNDBUF_BIG		(4UL * 1024 * 1024)
+#define SNDBUF_SMALL		(128UL * 1024)
 
 #include <net/if.h>
 #include <limits.h>