diff --git a/drivers/dahdi/oct612x/oct612x-user.c b/drivers/dahdi/oct612x/oct612x-user.c
index 4ee5981..8d99271 100644
--- a/drivers/dahdi/oct612x/oct612x-user.c
+++ b/drivers/dahdi/oct612x/oct612x-user.c
@@ -22,6 +22,7 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/slab.h>
 
 #include <dahdi/kernel.h>