diff --git a/datastore_server/source/java/ch/systemsx/cisd/openbis/dss/generic/server/graph/TabularDataGraphCollectionConfiguration.java b/datastore_server/source/java/ch/systemsx/cisd/openbis/dss/generic/server/graph/TabularDataGraphCollectionConfiguration.java
index c9ce1dbdb8e3e4bb6fdd0831dcb12684695e8870..5f745c00ace44dd4ed45b33ed712e9a1346d3552 100644
--- a/datastore_server/source/java/ch/systemsx/cisd/openbis/dss/generic/server/graph/TabularDataGraphCollectionConfiguration.java
+++ b/datastore_server/source/java/ch/systemsx/cisd/openbis/dss/generic/server/graph/TabularDataGraphCollectionConfiguration.java
@@ -231,7 +231,7 @@ public class TabularDataGraphCollectionConfiguration implements ICsvFileReaderCo
     {
         comment = '#';
 
-        this.columnDelimiter = PropertyUtils.getChar(properties, SEPARATOR_PROPERTY_KEY, ';');
+        this.columnDelimiter = PropertyUtils.getChar(properties, SEPARATOR_PROPERTY_KEY, ',');
         this.ignoreComments =
                 PropertyUtils.getBoolean(properties, IGNORE_COMMENTS_PROPERTY_KEY, true);