diff --git a/arch/arm/mach-sa1100/time.c b/arch/arm/mach-sa1100/time.c
index e4b435e..688b1e1 100644
--- a/arch/arm/mach-sa1100/time.c
+++ b/arch/arm/mach-sa1100/time.c
@@ -11,6 +11,7 @@
 #include <linux/init.h>
 #include <linux/errno.h>
 #include <linux/interrupt.h>
+#include <linux/irq.h>
 #include <linux/timex.h>
 #include <linux/signal.h>