Index: lams_tool_survey/src/java/org/lamsfoundation/lams/tool/survey/dao/hibernate/SurveyUserDAOHibernate.java
===================================================================
diff -u -r2f725f8ef2aa09a2663b2335bf67213074426d11 -r5ea8a1dcbc604b9a526fd0edf8fb17e81ce15e3c
--- lams_tool_survey/src/java/org/lamsfoundation/lams/tool/survey/dao/hibernate/SurveyUserDAOHibernate.java	(.../SurveyUserDAOHibernate.java)	(revision 2f725f8ef2aa09a2663b2335bf67213074426d11)
+++ lams_tool_survey/src/java/org/lamsfoundation/lams/tool/survey/dao/hibernate/SurveyUserDAOHibernate.java	(.../SurveyUserDAOHibernate.java)	(revision 5ea8a1dcbc604b9a526fd0edf8fb17e81ce15e3c)
@@ -205,7 +205,7 @@
     private static final String GET_STATISTICS = "SELECT session.*, COUNT(*) numUsers "
 	    + "  FROM tl_lasurv11_session session, tl_lasurv11_survey survey, tl_lasurv11_user user "
 	    + "  WHERE survey.content_id = :contentId and session.survey_uid = survey.uid  and user.session_uid = session.uid "
-	    + "  GROUP BY session.session_id";
+	    + "  GROUP BY session.uid";
 
     @Override
     @SuppressWarnings("unchecked")