diff --git a/drivers/dahdi/dahdi_dummy.c b/drivers/dahdi/dahdi_dummy.c
index e7055db..6768b47 100644
--- a/drivers/dahdi/dahdi_dummy.c
+++ b/drivers/dahdi/dahdi_dummy.c
@@ -49,6 +49,7 @@
 #include <linux/init.h>
 #include <linux/errno.h>
 #include <linux/moduleparam.h>
+#include <linux/slab.h>
 
 #if defined(USE_HIGHRESTIMER)
 #include <linux/hrtimer.h>