diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h
index 12a1aa0..52c89ae 100644
--- a/include/linux/regulator/driver.h
+++ b/include/linux/regulator/driver.h
@@ -16,6 +16,7 @@
 #define __LINUX_REGULATOR_DRIVER_H_
 
 #include <linux/device.h>
+#include <linux/notifier.h>
 #include <linux/regulator/consumer.h>
 
 struct regulator_dev;