diff --git a/snprc_ehr/resources/queries/study/SndBcsSource.sql b/snprc_ehr/resources/queries/study/SndBcsSource.sql
index 54008cb5..7e39e1d0 100644
--- a/snprc_ehr/resources/queries/study/SndBcsSource.sql
+++ b/snprc_ehr/resources/queries/study/SndBcsSource.sql
@@ -29,6 +29,6 @@ SELECT
 
 FROM SND.Categories.BCS as b
          INNER JOIN SND.LookupSets as ls on ls.SetName = 'BCS'
-         INNER JOIN SND.Lookups as l on l.lookupSetId = ls.lookupSetId
+         INNER JOIN SND.Lookups as l on l.lookupSetId = ls.lookupSetId AND b.bcs = l.lookupId
          INNER JOIN SND.Events as e on b.EventId = e.EventId
          INNER JOIN SND.Projects as p on e.ParentObjectId = p.objectId
\ No newline at end of file