1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/watchdog/watchdog_core.h b/drivers/watchdog/watchdog_core.h
index bc7612be25ce..80503f229385 100644
--- a/drivers/watchdog/watchdog_core.h
+++ b/drivers/watchdog/watchdog_core.h
@@ -29,5 +29,5 @@
 /*
  *      Functions/procedures to be called by the core
  */
-int watchdog_dev_register(struct watchdog_device *);
-int watchdog_dev_unregister(struct watchdog_device *);
+extern int watchdog_dev_register(struct watchdog_device *);
+extern int watchdog_dev_unregister(struct watchdog_device *);