diff --git a/ui/views/App/Calls/IncallFullscreenWindow.qml b/ui/views/App/Calls/IncallFullscreenWindow.qml
index 73008475f..7b472ad42 100644
--- a/ui/views/App/Calls/IncallFullscreenWindow.qml
+++ b/ui/views/App/Calls/IncallFullscreenWindow.qml
@@ -194,6 +194,7 @@ Window {
 
           Component.onCompleted: {
             var updateDuration = function () {
+              var call = incall.caller.call
               text = Utils.formatElapsedTime(call.duration)
               Utils.setTimeout(elapsedTime, 1000, updateDuration)
             }