diff --git a/include/linux/cgroup-defs.h b/include/linux/cgroup-defs.h
index 26d1cea..c5588c4 100644
--- a/include/linux/cgroup-defs.h
+++ b/include/linux/cgroup-defs.h
@@ -490,6 +490,8 @@
 
 #else	/* CONFIG_CGROUPS */
 
+#define CGROUP_SUBSYS_COUNT 0
+
 static inline void cgroup_threadgroup_change_begin(struct task_struct *tsk) {}
 static inline void cgroup_threadgroup_change_end(struct task_struct *tsk) {}