diff --git a/src/edu/cornell/mannlib/semservices/service/impl/UMLSService.java b/src/edu/cornell/mannlib/semservices/service/impl/UMLSService.java
index 8ea36216..b39b094c 100644
--- a/src/edu/cornell/mannlib/semservices/service/impl/UMLSService.java
+++ b/src/edu/cornell/mannlib/semservices/service/impl/UMLSService.java
@@ -104,7 +104,7 @@ public class UMLSService implements ExternalConceptService {
                JSONObject o = allArray.getJSONObject(i);
                //System.out.println(o.toString());
                Concept concept = new Concept();
-               concept.setDefinedBy("UMLS");
+               concept.setDefinedBy("http://link.informatics.stonybrook.edu/umls");
                String cui = getJsonValue(o, "CUI");
                concept.setConceptId(cui);