diff --git a/CHANGELOG.md b/CHANGELOG.md
index e79ff72f..84844ac6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -25,6 +25,7 @@
 - Fixed issue with atom feed [\#147](https://github.com/torrentpier/torrentpier-lts/pull/147) ([belomaxorka](https://github.com/belomaxorka))
 - Added theme exists check [\#149](https://github.com/torrentpier/torrentpier-lts/pull/149) ([belomaxorka](https://github.com/belomaxorka))
 - Use XS_TPL_PREFIX instread of 'tpl_' [\#150](https://github.com/torrentpier/torrentpier-lts/pull/150) ([belomaxorka](https://github.com/belomaxorka))
+- Use constants instead of string literals [\#151](https://github.com/torrentpier/torrentpier-lts/pull/151) ([belomaxorka](https://github.com/belomaxorka))
 - Minor fixes [\#124](https://github.com/torrentpier/torrentpier-lts/pull/124), [\#133](https://github.com/torrentpier/torrentpier-lts/pull/133), [\#135](https://github.com/torrentpier/torrentpier-lts/pull/135), [\#136](https://github.com/torrentpier/torrentpier-lts/pull/136), [\#139](https://github.com/torrentpier/torrentpier-lts/pull/139), [\#142](https://github.com/torrentpier/torrentpier-lts/pull/142), [\#144](https://github.com/torrentpier/torrentpier-lts/pull/144), [\#145](https://github.com/torrentpier/torrentpier-lts/pull/145), [\#148](https://github.com/torrentpier/torrentpier-lts/pull/148) ([belomaxorka](https://github.com/belomaxorka))
 
 ## [v2.1.5-2023.03](https://github.com/torrentpier/torrentpier-lts/tree/v2.1.5-2023.03) (2023-04-04)
diff --git a/admin/admin_cron.php b/admin/admin_cron.php
index 4ba48d91..fe4bdd4e 100644
--- a/admin/admin_cron.php
+++ b/admin/admin_cron.php
@@ -76,7 +76,7 @@ switch ($mode)
 		));
 
 		//detect cron status
-		if (@file_exists('../triggers/cron_running'))
+		if (@file_exists(CRON_RUNNING))
 		{
 			$template->assign_vars(array(
 				'CRON_RUNNING' => true,
@@ -85,9 +85,9 @@ switch ($mode)
 	break;
 
 	case 'repair':
-		if (@file_exists('../triggers/cron_running'))
+		if (@file_exists(CRON_RUNNING))
 		{
-			rename("../triggers/cron_running", "../triggers/cron_allowed");
+			rename(CRON_RUNNING, CRON_ALLOWED);
 		}
 		redirect('admin/'.basename(__FILE__) . '?mode=list');
 	break;