diff --git a/include/linux/fib_rules.h b/include/linux/fib_rules.h
index 19a82b6..2987549 100644
--- a/include/linux/fib_rules.h
+++ b/include/linux/fib_rules.h
@@ -34,7 +34,7 @@
 	FRA_UNUSED3,
 	FRA_UNUSED4,
 	FRA_UNUSED5,
-	FRA_FWMARK,	/* netfilter mark (IPv4) */
+	FRA_FWMARK,	/* netfilter mark (IPv4/IPv6) */
 	FRA_FLOW,	/* flow/class id */
 	FRA_UNUSED6,
 	FRA_UNUSED7,