Index: /trunk/src/VBox/ValidationKit/testmanager/webui/wuireport.py
===================================================================
--- /trunk/src/VBox/ValidationKit/testmanager/webui/wuireport.py	(revision 61296)
+++ /trunk/src/VBox/ValidationKit/testmanager/webui/wuireport.py	(revision 61297)
@@ -281,5 +281,5 @@
         # Header row.
         sHtml += u' <tr><thead><th>#</th>';
-        self._formatSeriesNameColumnHeadersForTable();
+        sHtml += self._formatSeriesNameColumnHeadersForTable();
         for iPeriod, oPeriod in enumerate(reversed(oSet.aoPeriods)):
             sHtml += u'<th colspan="%d">%s%s</th>' % ( cColsPerSeries, webutils.escapeElem(oPeriod.sDesc),