diff --git a/lib/ace/mode/xml/sax.js b/lib/ace/mode/xml/sax.js
index 1fde0540..9aa61df8 100644
--- a/lib/ace/mode/xml/sax.js
+++ b/lib/ace/mode/xml/sax.js
@@ -110,7 +110,7 @@ function parse(source,defaultNSMapCopy,entityMap,domBuilder,errorHandler){
 			var localNSMap = config.localNSMap;
 			
 	        if(config.tagName != tagName){
-	            errorHandler.fatalError("end tag name: "+tagName+' is not match the current start tagName:'+config.tagName );
+	            errorHandler.fatalError("end tag name: " + tagName + " does not match the current start tagName: "+config.tagName );
 	        }
 			domBuilder.endElement(config.uri,config.localName,tagName);
 			if(localNSMap){