diff --git a/OMOP_CDMv5.3.1_Field_Level.csv b/OMOP_CDMv5.3.1_Field_Level.csv
index a6abb79..326938f 100644
--- a/OMOP_CDMv5.3.1_Field_Level.csv
+++ b/OMOP_CDMv5.3.1_Field_Level.csv
@@ -151,7 +151,7 @@ VISIT_DETAIL,visit_detail_end_datetime,No,datetime,,,No,No,,,
 VISIT_DETAIL,visit_detail_type_concept_id,Yes,Integer,,,No,Yes,CONCEPT,CONCEPT_ID,
 VISIT_DETAIL,provider_id,No,integer,,,No,Yes,PROVIDER,PROVIDER_ID,
 VISIT_DETAIL,care_site_id,No,integer,,,No,Yes,CARE_SITE,CARE_SITE_ID,
-VISIT_DETAIL,visit_detail_source_value,No,string(50),,,No,No,,,
+VISIT_DETAIL,visit_detail_source_value,No,varchar(50),,,No,No,,,
 VISIT_DETAIL,visit_detail_source_concept_id,No,Integer,,,No,Yes,CONCEPT,CONCEPT_ID,
 VISIT_DETAIL,admitting_source_value,No,Varchar(50),,,No,No,,,
 VISIT_DETAIL,admitting_source_concept_id,No,Integer,,,No,Yes,CONCEPT,CONCEPT_ID,