diff --git a/drivers/hwmon/i5k_amb.c b/drivers/hwmon/i5k_amb.c
index 27d7f72..e880e2c 100644
--- a/drivers/hwmon/i5k_amb.c
+++ b/drivers/hwmon/i5k_amb.c
@@ -30,6 +30,7 @@
 #include <linux/log2.h>
 #include <linux/pci.h>
 #include <linux/platform_device.h>
+#include <linux/slab.h>
 
 #define DRVNAME "i5k_amb"