diff --git a/drivers/macintosh/via-pmu-backlight.c b/drivers/macintosh/via-pmu-backlight.c
index c2d87e7fa85b..89450645c230 100644
--- a/drivers/macintosh/via-pmu-backlight.c
+++ b/drivers/macintosh/via-pmu-backlight.c
@@ -10,6 +10,7 @@
 
 #include <asm/ptrace.h>
 #include <linux/adb.h>
+#include <linux/backlight.h>
 #include <linux/pmu.h>
 #include <asm/backlight.h>