diff --git a/src/Gui/Pages.cpp b/src/Gui/Pages.cpp
index ca3ad417fb..d3651e3358 100644
--- a/src/Gui/Pages.cpp
+++ b/src/Gui/Pages.cpp
@@ -1950,7 +1950,7 @@ CustomMetricsPage::addClicked()
 \n\
     # calculate metric value at end\n\
     value { mean(samples(POWER)); }\n\
-    count { count(samples(POWER)); }\n\
+    count { Duration; }\n\
 }";
 
     EditUserMetricDialog editor(this, context, here);