Index: xwiki-platform-applications/administration/src/main/resources/XWiki/XWikiPreferences.xml
===================================================================
--- xwiki-platform-applications/administration/src/main/resources/XWiki/XWikiPreferences.xml	(revision 11467)
+++ xwiki-platform-applications/administration/src/main/resources/XWiki/XWikiPreferences.xml	(working copy)
@@ -1934,7 +1934,7 @@
 <showRightPanels>1</showRightPanels>
 </property>
 <property>
-<skin>XWiki.DefaultSkin</skin>
+<skin></skin>
 </property>
 <property>
 <smtp_server>127.0.0.1</smtp_server>