diff -Nur anaconda-13.21.229/textw/upgrade_text.py anaconda-13.21.229_bz8761/textw/upgrade_text.py
--- anaconda-13.21.229/textw/upgrade_text.py	2015-03-30 11:13:55.394000000 +0200
+++ anaconda-13.21.229_bz8761/textw/upgrade_text.py	2015-03-30 11:15:09.923000000 +0200
@@ -252,6 +252,12 @@
             header = _("Wrong SME server version")
             reason = _("Your system is not upgradeable using this version of SME server. The currently installed system is a %s bit version, but this version of SME server is a %s bit version.") % (arch, cur_arch)
 
+        if not desc.startswith('SME Server 9'):
+            sys_is_not_upgradeable = 1
+            header = _("Wrong SME Server version found")
+            reason = _("Your system %s is not upgradeable to SME Server 9.1" %(desc))
+
+
         if sys_is_not_upgradeable:
             partList.append(_("Reboot system"))
             (button, choice) =  ListboxChoiceWindow(screen, header,