diff --git a/net/9p/client.c b/net/9p/client.c
index e3e5bf4..6e6b928 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -29,6 +29,7 @@
 #include <linux/poll.h>
 #include <linux/idr.h>
 #include <linux/mutex.h>
+#include <linux/slab.h>
 #include <linux/sched.h>
 #include <linux/uaccess.h>
 #include <net/9p/9p.h>