diff --git a/kernel/ucount.c b/kernel/ucount.c
index fbab754..335cc5d 100644
--- a/kernel/ucount.c
+++ b/kernel/ucount.c
@@ -71,6 +71,7 @@
 	UCOUNT_ENTRY("max_pid_namespaces"),
 	UCOUNT_ENTRY("max_uts_namespaces"),
 	UCOUNT_ENTRY("max_ipc_namespaces"),
+	UCOUNT_ENTRY("max_cgroup_namespaces"),
 	{ }
 };
 #endif /* CONFIG_SYSCTL */