diff --git a/drivers/hwmon/lm75.c b/drivers/hwmon/lm75.c
index a40166f..4fa3220 100644
--- a/drivers/hwmon/lm75.c
+++ b/drivers/hwmon/lm75.c
@@ -95,7 +95,7 @@
 	struct i2c_client *client = to_i2c_client(dev);
 	struct lm75_data *data = i2c_get_clientdata(client);
 	int nr = attr->index;
-	unsigned long temp = simple_strtoul(buf, NULL, 10);
+	long temp = simple_strtol(buf, NULL, 10);
 
 	mutex_lock(&data->update_lock);
 	data->temp[nr] = LM75_TEMP_TO_REG(temp);