diff --git a/plugins/Actions/Reports/Base.php b/plugins/Actions/Reports/Base.php
index fb1158e6a91360a82995c58f438d6621022e9752..4e20e271e22b040a50f4f966b97e96cca7d6760e 100644
--- a/plugins/Actions/Reports/Base.php
+++ b/plugins/Actions/Reports/Base.php
@@ -66,7 +66,9 @@ abstract class Base extends \Piwik\Plugin\Report
         ));
 
         // prettify avg_time_on_page column
-        $getPrettyTimeFromSeconds = '\Piwik\MetricsFormatter::getPrettyTimeFromSeconds';
+        $getPrettyTimeFromSeconds = function ($time) {
+            return MetricsFormatter::getPrettyTimeFromSeconds($time, false, true, false);
+        };
         $view->config->filters[] = array('ColumnCallbackReplace', array('avg_time_on_page', $getPrettyTimeFromSeconds));
 
         // prettify avg_time_generation column
diff --git a/tmp/.gitkeep b/tmp/.gitkeep
old mode 100644
new mode 100755