diff --git a/drivers/gpio/vx855_gpio.c b/drivers/gpio/vx855_gpio.c
index 8a98ee5..ef5aabd 100644
--- a/drivers/gpio/vx855_gpio.c
+++ b/drivers/gpio/vx855_gpio.c
@@ -26,6 +26,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/gpio.h>
+#include <linux/slab.h>
 #include <linux/device.h>
 #include <linux/platform_device.h>
 #include <linux/pci.h>