diff --git a/drivers/char/watchdog/iTCO_wdt.c b/drivers/char/watchdog/iTCO_wdt.c
index ebd3fc8..8f89948 100644
--- a/drivers/char/watchdog/iTCO_wdt.c
+++ b/drivers/char/watchdog/iTCO_wdt.c
@@ -494,7 +494,7 @@
 		}
 
 		default:
-			return -ENOIOCTLCMD;
+			return -ENOTTY;
 	}
 }