diff --git a/drivers/hwmon/max6639.c b/drivers/hwmon/max6639.c
index 70650de..dac6d85 100644
--- a/drivers/hwmon/max6639.c
+++ b/drivers/hwmon/max6639.c
@@ -35,7 +35,7 @@
 #include <linux/i2c/max6639.h>
 
 /* Addresses to scan */
-static unsigned short normal_i2c[] = { 0x2c, 0x2e, 0x2f, I2C_CLIENT_END };
+static const unsigned short normal_i2c[] = { 0x2c, 0x2e, 0x2f, I2C_CLIENT_END };
 
 /* The MAX6639 registers, valid channel numbers: 0, 1 */
 #define MAX6639_REG_TEMP(ch)			(0x00 + (ch))