diff --git a/drivers/video/backlight/backlight.c b/drivers/video/backlight/backlight.c
index 9dc93c5e480b..1e9b7e85d99a 100644
--- a/drivers/video/backlight/backlight.c
+++ b/drivers/video/backlight/backlight.c
@@ -16,6 +16,7 @@
 #include <linux/ctype.h>
 #include <linux/err.h>
 #include <linux/slab.h>
+#include <linux/of.h>
 
 #ifdef CONFIG_PMAC_BACKLIGHT
 #include <asm/backlight.h>