diff --git a/drivers/regulator/twl-regulator.c b/drivers/regulator/twl-regulator.c
index a8365229ea6d70a22cd8e4fe56647748823b0e7d..564acae3eae8eabd3de00f15d140ba53177396a7 100644
--- a/drivers/regulator/twl-regulator.c
+++ b/drivers/regulator/twl-regulator.c
@@ -10,6 +10,8 @@
  */
 
 #include <linux/module.h>
+#include <linux/string.h>
+#include <linux/slab.h>
 #include <linux/init.h>
 #include <linux/err.h>
 #include <linux/platform_device.h>