diff --git a/drivers/hwmon/max1111.c b/drivers/hwmon/max1111.c
index 9ac4972..12a54aa 100644
--- a/drivers/hwmon/max1111.c
+++ b/drivers/hwmon/max1111.c
@@ -20,6 +20,7 @@
 #include <linux/hwmon.h>
 #include <linux/hwmon-sysfs.h>
 #include <linux/spi/spi.h>
+#include <linux/slab.h>
 
 #define MAX1111_TX_BUF_SIZE	1
 #define MAX1111_RX_BUF_SIZE	2