diff --git a/contrib/check-config.sh b/contrib/check-config.sh
index 9021ec56fa..3c54ae4e52 100755
--- a/contrib/check-config.sh
+++ b/contrib/check-config.sh
@@ -184,6 +184,8 @@ echo 'Optional Features:'
 }
 flags=(
 	RESOURCE_COUNTERS
+	BLK_CGROUP
+	IOSCHED_CFQ
 	CGROUP_PERF
 	CFS_BANDWIDTH
 )