diff --git a/arch/x86/xen/debugfs.c b/arch/x86/xen/debugfs.c
index e133ce2..1304bce 100644
--- a/arch/x86/xen/debugfs.c
+++ b/arch/x86/xen/debugfs.c
@@ -1,5 +1,6 @@
 #include <linux/init.h>
 #include <linux/debugfs.h>
+#include <linux/slab.h>
 #include <linux/module.h>
 
 #include "debugfs.h"