diff --git a/src/wp-includes/js/tinymce/plugins/wordpress/plugin.js b/src/wp-includes/js/tinymce/plugins/wordpress/plugin.js
index 3daee1790f..31dd6fa94d 100644
--- a/src/wp-includes/js/tinymce/plugins/wordpress/plugin.js
+++ b/src/wp-includes/js/tinymce/plugins/wordpress/plugin.js
@@ -793,7 +793,7 @@ tinymce.PluginManager.add( 'wordpress', function( editor ) {
 					clearTimeout( timeout );
 
 					timeout = setTimeout( function() {
-						activeToolbar.show();
+						activeToolbar && activeToolbar.show && activeToolbar.show();
 					}, 250 );
 				}
 			}