diff --git a/doc/cgi-examples/buero_light.xml b/doc/cgi-examples/buero_light.xml
index cb0e560a..806baab7 100644
--- a/doc/cgi-examples/buero_light.xml
+++ b/doc/cgi-examples/buero_light.xml
@@ -22,6 +22,7 @@
                  height="480" 
                  begin="-8h" 
                  end="0" 
+                 refreshTime="300"
                  precision="2">
             <curve title="Buero" value="nodes/XXXXXXXX/LIGHTCTL_STATE" modifier="Sa30" />
           </graph>