diff --git a/core/domain_settings/domain_setting_edit.php b/core/domain_settings/domain_setting_edit.php
index ae0aa51041..12ef52a719 100644
--- a/core/domain_settings/domain_setting_edit.php
+++ b/core/domain_settings/domain_setting_edit.php
@@ -165,7 +165,7 @@ if (count($_POST) > 0 && strlen($_POST["persistformvar"]) == 0) {
 							$array['dialplan_details'][0]['dialplan_uuid'] = $dialplan_uuid;
 							$array['dialplan_details'][0]['dialplan_detail_tag'] = 'action';
 							$array['dialplan_details'][0]['dialplan_detail_type'] = 'set';
-							$array['dialplan_details'][0]['dialplan_detail_data'] = 'timezone=".$domain_setting_value."';
+							$array['dialplan_details'][0]['dialplan_detail_data'] = 'timezone='.$domain_setting_value;
 							$array['dialplan_details'][0]['dialplan_detail_inline'] = 'true';
 							$array['dialplan_details'][0]['dialplan_detail_group'] = '0';
 							$p->add('dialplan_detail_add', 'temp');