diff --git a/fs/smartfs/smartfs_smart.c b/fs/smartfs/smartfs_smart.c
index d41476065a90b..bc4e6477cdfa3 100644
--- a/fs/smartfs/smartfs_smart.c
+++ b/fs/smartfs/smartfs_smart.c
@@ -1035,7 +1035,7 @@ static int smartfs_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
         }
         break;
       default:
-        ret = -ENOSYS;
+        ret = -ENOTTY;
         break;
     }