diff --git a/html-templates/Overview.html b/html-templates/Overview.html
index 1bad538..f718604 100644
--- a/html-templates/Overview.html
+++ b/html-templates/Overview.html
@@ -10,7 +10,7 @@
             data-nodename="promagmbs.volume_flow"
             data-units="<%= channels['promagmbs.volume_flow_units'].value %>"
             data-min="0"
-            data-max="20000"
+            data-max="40000"
             data-decimalplaces="2"
             data-colors="0.1:#DF5353,0.5:#DDDF0D,0.9:#55BF3B"
             data-valuefontsize="18px">