diff --git a/include/net/udp.h b/include/net/udp.h
index 9671f5f..e66fc29 100644
--- a/include/net/udp.h
+++ b/include/net/udp.h
@@ -81,7 +81,7 @@
 extern struct udp_table udp_table;
 extern void udp_table_init(struct udp_table *, const char *);
 static inline struct udp_hslot *udp_hashslot(struct udp_table *table,
-					     struct net *net, unsigned num)
+					     struct net *net, unsigned int num)
 {
 	return &table->hash[udp_hashfn(net, num, table->mask)];
 }