diff --git a/drivers/xen/manage.c b/drivers/xen/manage.c
index 5d42d55..2ac4440 100644
--- a/drivers/xen/manage.c
+++ b/drivers/xen/manage.c
@@ -3,6 +3,7 @@
  */
 #include <linux/kernel.h>
 #include <linux/err.h>
+#include <linux/slab.h>
 #include <linux/reboot.h>
 #include <linux/sysrq.h>
 #include <linux/stop_machine.h>