diff --git a/arch/arm/kernel/arch_timer.c b/arch/arm/kernel/arch_timer.c
index 36ebcf4b516f..d957a51435d8 100644
--- a/arch/arm/kernel/arch_timer.c
+++ b/arch/arm/kernel/arch_timer.c
@@ -10,6 +10,7 @@
  */
 #include <linux/init.h>
 #include <linux/types.h>
+#include <linux/errno.h>
 
 #include <asm/delay.h>
 #include <asm/sched_clock.h>