diff --git a/addon/etc/rmupdate-addon.cfg b/addon/etc/rmupdate-addon.cfg
index cde4aa0..f456c31 100644
--- a/addon/etc/rmupdate-addon.cfg
+++ b/addon/etc/rmupdate-addon.cfg
@@ -1,5 +1,5 @@
 {
-  CONFIG_URL /addons/rmupdate
+  CONFIG_URL /addons/rmupdate/index.cgi
   CONFIG_DESCRIPTION {
     de {<li>System-Update</li>}
     en {<li>System-update</li>}
diff --git a/addon/www/index.cgi b/addon/www/index.cgi
new file mode 100644
index 0000000..46b5811
--- /dev/null
+++ b/addon/www/index.cgi
@@ -0,0 +1,36 @@
+#!/bin/tclsh
+
+load tclrega.so
+
+catch {
+  set input $env(QUERY_STRING)
+  set pairs [split $input &]
+  foreach pair $pairs {
+    if {0 != [regexp "^(\[^=]*)=(.*)$" $pair dummy varname val]} {
+      set $varname $val
+    }
+  }
+}
+
+if {[info exists sid] > 0} {
+    # Session prüfen
+    if {
+        ([string index $sid 0] != "@")
+        || ([string index $sid [expr [string length $sid] -1]]  != "@")
+        || ([string length $sid] != 12)} {
+        puts {error: session invalid}
+    } else {
+        regsub -all {@} $sid "" sid
+        set res [lindex [rega_script "Write(system.GetSessionVarStr('$sid'));"] 1]
+        if {$res != ""} {
+            # gültige Session
+            set fp [open "/usr/local/addons/rmupdate/www/rmupdate.html" r]
+            puts -nonewline [read $fp]
+            close $fp
+        } else {
+            puts {error: session invalid}
+        }
+    }
+} else {
+    puts {error: no session}
+}
diff --git a/addon/www/index.html b/addon/www/rmupdate.html
similarity index 100%
rename from addon/www/index.html
rename to addon/www/rmupdate.html