diff --git a/oaipmh-core/src/main/java/info/textgrid/middleware/RecordDelivererDC.java b/oaipmh-core/src/main/java/info/textgrid/middleware/RecordDelivererDC.java
index 4abf198a372c5ff32e1191faf39a3d433fd69f14..a93bf2caacfc4ce5c8e52d07c2cca99a3737263d 100644
--- a/oaipmh-core/src/main/java/info/textgrid/middleware/RecordDelivererDC.java
+++ b/oaipmh-core/src/main/java/info/textgrid/middleware/RecordDelivererDC.java
@@ -134,9 +134,7 @@ public class RecordDelivererDC extends RecordDelivererAbstract {
         }
         String setSpec =
             DublinCoreFieldLoader.fillList(esResultObject, DARIAHConstants.IDENTIFIER_LIST).get(0);
-        setRecordHeader(OAIPMHUtilities
-            .convertDateFormat(dateOfCreation).toString(), identifier, record, dublinCoreBuilder,
-            setSpec);
+        setRecordHeader(dateOfCreation, identifier, record, dublinCoreBuilder, setSpec);
       }
 
       if (this.textgrid == true
diff --git a/oaipmh-core/src/main/java/info/textgrid/middleware/RecordListDelivererDC.java b/oaipmh-core/src/main/java/info/textgrid/middleware/RecordListDelivererDC.java
index 9e181695a306082a62eff8715a24b93d863fadf7..372cac7e2e2f18deafec184d7869126b9fc4309a 100644
--- a/oaipmh-core/src/main/java/info/textgrid/middleware/RecordListDelivererDC.java
+++ b/oaipmh-core/src/main/java/info/textgrid/middleware/RecordListDelivererDC.java
@@ -220,9 +220,11 @@ public class RecordListDelivererDC extends RecordListDelivererAbstract {
             log.debug(e);
           }
           
-          
+
+          // ES6
           JSONObject json = new JSONObject(hit.getSourceAsMap());
           this.modifiedValue = OAIPMHUtilities.fieldLoader(json, this.modifiedField);
+          // OLD
           //this.modifiedValue = hit.getSourceAsMap().get(this.modifiedField).toString();