diff --git a/lisp/tab-bar.el b/lisp/tab-bar.el
index d8f932e7a4..e4b3c8cf19 100644
--- a/lisp/tab-bar.el
+++ b/lisp/tab-bar.el
@@ -801,7 +801,6 @@ tab-bar-new-tab-to
                           (nth to-index tabs)))
 
     (cond
-     (tab-bar-mode)
      ((eq tab-bar-show t)
       (tab-bar-mode 1))
      ((and (natnump tab-bar-show)