diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h
index 8615d66..bcba84e 100644
--- a/include/linux/tty_driver.h
+++ b/include/linux/tty_driver.h
@@ -309,7 +309,8 @@
 extern struct tty_driver *tty_find_polling_driver(char *name, int *line);
 
 extern void tty_driver_kref_put(struct tty_driver *driver);
-extern inline struct tty_driver *tty_driver_kref_get(struct tty_driver *d)
+
+static inline struct tty_driver *tty_driver_kref_get(struct tty_driver *d)
 {
 	kref_get(&d->kref);
 	return d;