diff --git a/CHANGES.md b/CHANGES.md
index c5b04523b89..6702d8c508c 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -5,6 +5,7 @@ CKEditor 4 Changelog
 
 Fixed Issues:
 
+* [#11438](http://dev.ckeditor.com/ticket/11438): Splitting table cells vertically is no longer chnaging table structure.
 * [#8899](http://dev.ckeditor.com/ticket/8899): Fixed: Links in About Dialog now open in new window/tab.
 * [#11490](http://dev.ckeditor.com/ticket/11490): Fixed issue with menubuttons panel showing in source mode.
 * [#11417](http://dev.ckeditor.com/ticket/11417): The [`widget.doubleclick`](http://docs.ckeditor.com/#!/api/CKEDITOR.plugins.widget-event-doubleclick) event is not cancelled anymore after editing has been triggered.
diff --git a/plugins/tabletools/plugin.js b/plugins/tabletools/plugin.js
index ee5afc6fceb..6da5b7726b1 100644
--- a/plugins/tabletools/plugin.js
+++ b/plugins/tabletools/plugin.js
@@ -607,7 +607,7 @@
 
 			// The destination row is empty, append at will.
 			if ( !candidateCell )
-				newCellTr.append( newCell, true );
+				newCellTr.append( newCell );
 		} else {
 			newCellRowSpan = newRowSpan = 1;