diff --git a/drivers/staging/hv/hv_mouse.c b/drivers/staging/hv/hv_mouse.c
index cbe5686..05b86cc 100644
--- a/drivers/staging/hv/hv_mouse.c
+++ b/drivers/staging/hv/hv_mouse.c
@@ -14,6 +14,7 @@
  */
 #include <linux/init.h>
 #include <linux/module.h>
+#include <linux/delay.h>
 #include <linux/device.h>
 #include <linux/workqueue.h>
 #include <linux/sched.h>