diff --git a/lib/plausible/stats/fragments.ex b/lib/plausible/stats/fragments.ex
index 0c27f65e4..692233f10 100644
--- a/lib/plausible/stats/fragments.ex
+++ b/lib/plausible/stats/fragments.ex
@@ -25,7 +25,7 @@ defmodule Plausible.Stats.Fragments do
 
   defmacro visit_duration() do
     quote do
-      fragment("toUInt32(round(avg(duration * sign)))")
+      fragment("toUInt32(ifNotFinite(round(avg(duration * sign)), 0))")
     end
   end