diff --git a/app/extensions/app_config.php b/app/extensions/app_config.php
index 890d984522..426c9e247f 100644
--- a/app/extensions/app_config.php
+++ b/app/extensions/app_config.php
@@ -155,7 +155,7 @@
 		$apps[$x]['default_settings'][$y]['default_setting_category'] = "domain";
 		$apps[$x]['default_settings'][$y]['default_setting_subcategory'] = "dial_string";
 		$apps[$x]['default_settings'][$y]['default_setting_name'] = "text";
-		$apps[$x]['default_settings'][$y]['default_setting_value'] = "{sip_invite_domain=${domain_name},leg_timeout=${call_timeout},presence_id=${dialed_user}@${dialed_domain}}${sofia_contact(*/${dialed_user}@${dialed_domain})}";
+		$apps[$x]['default_settings'][$y]['default_setting_value'] = "{sip_invite_domain=\${domain_name},leg_timeout=\${call_timeout},presence_id=\${dialed_user}@\${dialed_domain}}\${sofia_contact(\*/\${dialed_user}@\${dialed_domain})}";
 		$apps[$x]['default_settings'][$y]['default_setting_enabled'] = "false";
 		$apps[$x]['default_settings'][$y]['default_setting_description'] = "";
 		$y++;
@@ -498,4 +498,4 @@
 		$apps[$x]['db'][$y]['fields'][$z]['key']['reference']['field'] = "user_uuid";
 		$apps[$x]['db'][$y]['fields'][$z]['description']['en-us'] = "";
 
-?>
\ No newline at end of file
+?>