1 files changed, 5 insertions, 2 deletions
diff --git a/plugins/PagePerformance/Columns/TimeServer.php b/plugins/PagePerformance/Columns/TimeServer.php
index c86ec2a9e4..cc85c4fa2e 100644
--- a/plugins/PagePerformance/Columns/TimeServer.php
+++ b/plugins/PagePerformance/Columns/TimeServer.php
@@ -21,8 +21,11 @@ use Piwik\Tracker\Visitor;
 
 class TimeServer extends ActionDimension
 {
-    protected $columnName = 'time_server';
-    protected $columnType = 'MEDIUMINT(10) UNSIGNED NULL';
+    const COLUMN_TYPE = 'MEDIUMINT(10) UNSIGNED NULL';
+    const COLUMN_NAME = 'time_server';
+
+    protected $columnName = self::COLUMN_NAME;
+    protected $columnType = self::COLUMN_TYPE;
     protected $type = self::TYPE_DURATION_MS;
     protected $nameSingular = 'PagePerformance_ColumnTimeServer';