diff --git a/net/socket.c b/net/socket.c
index 41e8847..7565536 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -2391,7 +2391,7 @@
 }
 
 int kernel_setsockopt(struct socket *sock, int level, int optname,
-			char *optval, int optlen)
+			char *optval, unsigned int optlen)
 {
 	mm_segment_t oldfs = get_fs();
 	int err;