diff --git a/drivers/video/nvidia/nv_backlight.c b/drivers/video/nvidia/nv_backlight.c
index a50b303093a7..43f62d8ee41d 100644
--- a/drivers/video/nvidia/nv_backlight.c
+++ b/drivers/video/nvidia/nv_backlight.c
@@ -12,6 +12,11 @@
 #include <linux/backlight.h>
 #include <linux/fb.h>
 #include <linux/pci.h>
+
+#ifdef CONFIG_PMAC_BACKLIGHT
+#include <asm/backlight.h>
+#endif
+
 #include "nv_local.h"
 #include "nv_type.h"
 #include "nv_proto.h"