diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 524b70ab77a0..f6972b24664a 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -2160,7 +2160,7 @@ int ip_route_use_hint(struct sk_buff *skb, __be32 daddr, __be32 saddr,
 	if (rt->rt_type != RTN_LOCAL)
 		goto skip_validate_source;
 
-	tos &= IPTOS_RT_MASK;
+	tos &= INET_DSCP_MASK;
 	err = fib_validate_source(skb, saddr, daddr, tos, 0, dev, in_dev, &tag);
 	if (err < 0)
 		goto martian_source;