diff --git a/drivers/hwmon/hwmon.c b/drivers/hwmon/hwmon.c
index 29ea675..a61e781 100644
--- a/drivers/hwmon/hwmon.c
+++ b/drivers/hwmon/hwmon.c
@@ -10,6 +10,8 @@
     the Free Software Foundation; version 2 of the License.
 */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/module.h>
 #include <linux/device.h>
 #include <linux/err.h>
@@ -119,7 +121,7 @@
 
 	hwmon_class = class_create(THIS_MODULE, "hwmon");
 	if (IS_ERR(hwmon_class)) {
-		printk(KERN_ERR "hwmon.c: couldn't create sysfs class\n");
+		pr_err("couldn't create sysfs class\n");
 		return PTR_ERR(hwmon_class);
 	}
 	return 0;