Index: /CKEditor/trunk/CHANGES.html
===================================================================
--- /CKEditor/trunk/CHANGES.html	(revision 5510)
+++ /CKEditor/trunk/CHANGES.html	(revision 5511)
@@ -96,4 +96,5 @@
 		<li><a href="http://dev.fckeditor.net/ticket/5688">#5688</a> : Duplicate ids are used in dialog definition.</li>
 		<li><a href="http://dev.fckeditor.net/ticket/5570">#5570</a> : [IE] First enabling SCAYT blind cursor in editor.</li>
+		<li><a href="http://dev.fckeditor.net/ticket/5719">#5719</a> : [IE] 'change' dialog event should not be triggered when dialog is already closed.</li>
 		<li>Updated the following language files:<ul>
 			<li><a href="http://dev.fckeditor.net/ticket/5432">#5432</a> : Dutch;</li>
Index: /CKEditor/trunk/_source/plugins/dialogui/plugin.js
===================================================================
--- /CKEditor/trunk/_source/plugins/dialogui/plugin.js	(revision 5510)
+++ /CKEditor/trunk/_source/plugins/dialogui/plugin.js	(revision 5511)
@@ -88,5 +88,12 @@
 					dialog.on( 'load', function()
 						{
-							this.getInputElement().on( 'change', function(){ this.fire( 'change', { value : this.getValue() } ); }, this );
+							this.getInputElement().on( 'change', function()
+							{
+								// Make sure 'onchange' doesn't get fired after dialog closed. (#5719)
+								if ( !dialog.parts.dialog.isVisible() )
+									return;
+								
+								this.fire( 'change', { value : this.getValue() } );
+							}, this );
 						}, this );
 					this._.domOnChangeRegistered = true;