diff --git a/09 dm_td_external_geo_type.sql b/09 dm_td_external_geo_type.sql
index ec900c1..62ea7c2 100644
--- a/09 dm_td_external_geo_type.sql	
+++ b/09 dm_td_external_geo_type.sql	
@@ -1512,7 +1512,7 @@ PROVINCE_GROUP
 select
   DATA_SOURCE,
   AUDIT_COD,
-  null as REGION_TYPE,
+  '' as REGION_TYPE,
   PROVINCE_GROUP
 from 
 dm_td_external_geo_type_temp