diff --git a/include/linux/rhashtable.h b/include/linux/rhashtable.h
index de7cac753b09..de1459c74c4d 100644
--- a/include/linux/rhashtable.h
+++ b/include/linux/rhashtable.h
@@ -20,6 +20,7 @@
 
 #include <linux/list_nulls.h>
 #include <linux/workqueue.h>
+#include <linux/mutex.h>
 
 /*
  * The end of the chain is marked with a special nulls marks which has