diff --git a/odm2api/ODM2/services/readService.py b/odm2api/ODM2/services/readService.py
index 22a2b19..4cffa89 100644
--- a/odm2api/ODM2/services/readService.py
+++ b/odm2api/ODM2/services/readService.py
@@ -554,9 +554,12 @@ def getAffiliations(self, ids=None, personfirst=None, personlast=None, orgcode=N
         q = self._session.query(Affiliations)
 
         if ids: q = q.filter(Affiliations.AffiliationID.in_(ids))
-        if orgcode: q = q.filter(Organizations.OrganizationCode.ilike(orgcode))
-        if personfirst: q = q.filter(People.PersonFirstName.ilike(personfirst))
-        if personlast: q = q.filter(People.PersonLastName.ilike(personlast))
+        if orgcode: q = q.join(Affiliations.OrganizationObj).filter(
+            Organizations.OrganizationCode.ilike(orgcode))
+        if personfirst: q = q.join(Affiliations.PersonObj).filter(
+            People.PersonFirstName.ilike(personfirst))
+        if personlast: q = q.join(Affiliations.PersonObj).filter(
+            People.PersonLastName.ilike(personlast))
 
         try:
             return q.all()