diff --git a/net/ipv4/fib_rules.c b/net/ipv4/fib_rules.c
index d242e52..58fb91b 100644
--- a/net/ipv4/fib_rules.c
+++ b/net/ipv4/fib_rules.c
@@ -169,7 +169,7 @@
 
 static struct fib_table *fib_empty_table(void)
 {
-	int id;
+	u32 id;
 
 	for (id = 1; id <= RT_TABLE_MAX; id++)
 		if (fib_tables[id] == NULL)