diff --git a/java/org/slub/rosetta/dps/repository/plugin/TestSLUBXmlFormatValidationPlugin.java b/java/org/slub/rosetta/dps/repository/plugin/TestSLUBXmlFormatValidationPlugin.java
index d3391ddab02bc1cbee09547092530a9e1c498a9a..febea04903c281459d1c4a15a73e8f7fbd2c10a2 100644
--- a/java/org/slub/rosetta/dps/repository/plugin/TestSLUBXmlFormatValidationPlugin.java
+++ b/java/org/slub/rosetta/dps/repository/plugin/TestSLUBXmlFormatValidationPlugin.java
@@ -49,6 +49,7 @@ public class TestSLUBXmlFormatValidationPlugin {
         initp.put("schemacatalog", "example_catalog/schema_catalog.xml");
         mock.initParams(initp);
         mock.loadNamespaceSchemaMap(initp.get("schemacatalog"));
+        assertNotNull("namespacemap loaded", mock.getNamespaceSchemaMap());
     }
 
     @org.junit.Test