Index: src/main/resources/mgnl-resources/fckeditor/custom/config/magnoliaStandard.js
===================================================================
--- src/main/resources/mgnl-resources/fckeditor/custom/config/magnoliaStandard.js	(revision 35388)
+++ src/main/resources/mgnl-resources/fckeditor/custom/config/magnoliaStandard.js	(working copy)
@@ -79,6 +79,7 @@
 
     if (MgnlFCKConfig.styles != '') {
         toolbar[2].push('Style');
+        FCKConfig.CustomStyles = {}; // Resetting default custom style
         FCKConfig.StylesXmlPath = MgnlFCKConfig.contextPath + MgnlFCKConfig.styles;
     }