diff --git a/modules/Calendar/actions/DeleteAjax.php b/modules/Calendar/actions/DeleteAjax.php
index 599852a8b1c1ff1c8c7a601cb9d9d5cbe3c8489f..679f71bb73fcf0848633c9b76f6e6575ef8d497e 100644
--- a/modules/Calendar/actions/DeleteAjax.php
+++ b/modules/Calendar/actions/DeleteAjax.php
@@ -31,7 +31,7 @@ class Calendar_DeleteAjax_Action extends Vtiger_DeleteAjax_Action {
 			$activityModulesList = array('Calendar', 'Events');
 			$recordEntityName = getSalesEntityType($record);
 
-			if ((!empty($recordEntityName) && !in_array($recordEntityName, $activityModulesList)) || (!empty($sourceModule) && !in_array($sourceModule, $activityModulesList))) {
+		if (!in_array($recordEntityName, $activityModulesList)  || (!empty($sourceModule) && !in_array($sourceModule, $activityModulesList))) {
 				throw new AppException(vtranslate('LBL_PERMISSION_DENIED'));
 		}
 		}