Index: /FCKeditor/trunk/editor/_source/commandclasses/fckcorestylecommand.js
===================================================================
--- /FCKeditor/trunk/editor/_source/commandclasses/fckcorestylecommand.js	(revision 902)
+++ /FCKeditor/trunk/editor/_source/commandclasses/fckcorestylecommand.js	(revision 903)
@@ -37,4 +37,6 @@
 	Execute : function()
 	{
+		FCKUndo.SaveUndoStep() ;
+
 		if ( this.IsActive )
 			FCKStyles.RemoveStyle( this.StyleName ) ;