diff --git a/drivers/base/class.c b/drivers/base/class.c
index 46336f1b93b6..75057aaab809 100644
--- a/drivers/base/class.c
+++ b/drivers/base/class.c
@@ -679,7 +679,8 @@ int class_device_register(struct class_device *class_dev)
 struct class_device *class_device_create(struct class *cls,
 					 struct class_device *parent,
 					 dev_t devt,
-					 struct device *device, char *fmt, ...)
+					 struct device *device,
+					 const char *fmt, ...)
 {
 	va_list args;
 	struct class_device *class_dev = NULL;
diff --git a/include/linux/device.h b/include/linux/device.h
index 1e5f30da98bc..1fec28546525 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -277,7 +277,7 @@ extern struct class_device *class_device_create(struct class *cls,
 						struct class_device *parent,
 						dev_t devt,
 						struct device *device,
-						char *fmt, ...)
+						const char *fmt, ...)
 					__attribute__((format(printf,5,6)));
 extern void class_device_destroy(struct class *cls, dev_t devt);