diff --git a/arch/powerpc/sysdev/timer.c b/arch/powerpc/sysdev/timer.c
index bdbf8fe520e42..4a01748b4217a 100644
--- a/arch/powerpc/sysdev/timer.c
+++ b/arch/powerpc/sysdev/timer.c
@@ -7,6 +7,7 @@
  */
 
 #include <linux/time.h>
+#include <linux/sysdev.h>
 #include <asm/rtc.h>
 
 static unsigned long suspend_rtc_time;