diff --git a/arch/openrisc/lib/delay.c b/arch/openrisc/lib/delay.c
index 036ae57180ef..5e89e4131304 100644
--- a/arch/openrisc/lib/delay.c
+++ b/arch/openrisc/lib/delay.c
@@ -15,6 +15,7 @@
 #include <linux/kernel.h>
 #include <linux/export.h>
 #include <linux/init.h>
+#include <linux/timex.h>
 #include <asm/param.h>
 #include <asm/delay.h>
 #include <asm/timex.h>