diff --git a/etl/xml_survey_extraction/XmlParser.py b/etl/xml_survey_extraction/XmlParser.py
index c65173dd..478891bf 100644
--- a/etl/xml_survey_extraction/XmlParser.py
+++ b/etl/xml_survey_extraction/XmlParser.py
@@ -106,6 +106,7 @@ class XmlParser:
     }
 
     TARIFF_MAP = {
+        "1": "Dual",
         "2": "Single"
     }