diff --git a/include/net/nexthop.h b/include/net/nexthop.h
index 36bb794f5cd65cddc60139e7f84024f9f7a1a4cb..902ff382a6dcc6e3f0c1a9a244061e5a84264915 100644
--- a/include/net/nexthop.h
+++ b/include/net/nexthop.h
@@ -7,7 +7,7 @@
 
 static inline int rtnh_ok(const struct rtnexthop *rtnh, int remaining)
 {
-	return remaining >= sizeof(*rtnh) &&
+	return remaining >= (int)sizeof(*rtnh) &&
 	       rtnh->rtnh_len >= sizeof(*rtnh) &&
 	       rtnh->rtnh_len <= remaining;
 }