diff --git a/resources/install/scripts/fax_retry.lua b/resources/install/scripts/fax_retry.lua
index c33013c7aa..2c18103ea9 100644
--- a/resources/install/scripts/fax_retry.lua
+++ b/resources/install/scripts/fax_retry.lua
@@ -92,6 +92,8 @@
 	hangup_cause_q850 = tonumber(env:getHeader("hangup_cause_q850"));
 
 --set default values
+	default_language = 'en';
+	default_dialect = 'us';
 	if (not origination_caller_id_name) then
 		origination_caller_id_name = '000000000000000';
 	end