diff --git a/drivers/video/pwm_backlight.c b/drivers/video/pwm_backlight.c
index 149fbae..468a570 100644
--- a/drivers/video/pwm_backlight.c
+++ b/drivers/video/pwm_backlight.c
@@ -13,6 +13,7 @@
 #include <malloc.h>
 #include <pwm.h>
 #include <asm/gpio.h>
+#include <linux/delay.h>
 #include <power/regulator.h>
 
 /**