diff --git a/drivers/staging/dgap/dgap_driver.c b/drivers/staging/dgap/dgap_driver.c
index 9f777e41c9a6..724a685753dd 100644
--- a/drivers/staging/dgap/dgap_driver.c
+++ b/drivers/staging/dgap/dgap_driver.c
@@ -36,6 +36,7 @@
 #include <linux/module.h>
 #include <linux/pci.h>
 #include <linux/delay.h>	/* For udelay */
+#include <linux/slab.h>
 #include <asm/uaccess.h>	/* For copy_from_user/copy_to_user */
 
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39)