diff --git a/drivers/staging/dgap/dgap_fep5.c b/drivers/staging/dgap/dgap_fep5.c
index 15f9a8512313..7deea2a41947 100644
--- a/drivers/staging/dgap/dgap_fep5.c
+++ b/drivers/staging/dgap/dgap_fep5.c
@@ -39,6 +39,7 @@
 #include <asm/uaccess.h>	/* For copy_from_user/copy_to_user */
 #include <linux/tty.h>
 #include <linux/tty_flip.h>	/* For tty_schedule_flip */
+#include <linux/slab.h>
 
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39)
 #include <linux/sched.h>