diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c
index 299533491a95f8bd4bdbe6702ff33bc5ad090783..368232af78d29fb714fa6462ed354c8a947c9846 100644
--- a/drivers/video/backlight/pwm_bl.c
+++ b/drivers/video/backlight/pwm_bl.c
@@ -45,7 +45,7 @@ struct pwm_bl_data {
 
 static void pwm_backlight_power_on(struct pwm_bl_data *pb, int brightness)
 {
-	int duty_cycle, err;
+	int err;
 
 	if (pb->enabled)
 		return;