diff --git a/core/misc/vertical-tabs.js b/core/misc/vertical-tabs.js
index a381bdcf12b5e0d85d4bcb9002e9b049c504285e..3f53cd80284b9d23f122435de5d5ff6509d61677 100644
--- a/core/misc/vertical-tabs.js
+++ b/core/misc/vertical-tabs.js
@@ -120,8 +120,8 @@
     // Keyboard events added:
     // Pressing the Enter key will open the tab pane.
     this.link.on('keydown', function (event) {
-      event.preventDefault();
       if (event.keyCode === 13) {
+        event.preventDefault();
         self.focus();
         // Set focus on the first input field of the visible details/tab pane.
         $(".vertical-tabs__pane :input:visible:enabled").eq(0).trigger('focus');