Index: xwiki-core/src/main/java/com/xpn/xwiki/stats/impl/xwiki/XWikiStatsReader.java
===================================================================
--- xwiki-core/src/main/java/com/xpn/xwiki/stats/impl/xwiki/XWikiStatsReader.java	(revision 10124)
+++ xwiki-core/src/main/java/com/xpn/xwiki/stats/impl/xwiki/XWikiStatsReader.java	(working copy)
@@ -127,7 +127,7 @@
         String nameFilter;
 
         if (scope.getType() == Scope.SPACE_SCOPE && "".equals(scope.getName())) {
-            nameFilter = "name not like '%.%' and name <> ''";
+            nameFilter = "name not like '%.%' and name is not null";
         } else {
             nameFilter = "name like ?";
             paramList.add(scope.getPattern());
Index: xwiki-core/src/main/java/com/xpn/xwiki/store/XWikiHibernateStore.java
===================================================================
--- xwiki-core/src/main/java/com/xpn/xwiki/store/XWikiHibernateStore.java	(revision 10124)
+++ xwiki-core/src/main/java/com/xpn/xwiki/store/XWikiHibernateStore.java	(working copy)
@@ -2809,7 +2809,7 @@
         String hql =
             "select doc.language from XWikiDocument as doc where doc.web = '"
                 + Utils.SQLFilter(doc.getSpace()) + "' and doc.name = '"
-                + Utils.SQLFilter(doc.getName()) + "' and doc.language <> ''";
+                + Utils.SQLFilter(doc.getName()) + "' and doc.language is not null";
         List<String> list = context.getWiki().search(hql, context);
         return (list == null) ? new ArrayList<String>() : list;
     }