--- a/src/net/timbusproject/context/converter/OWLExport.java
+++ b/src/net/timbusproject/context/converter/OWLExport.java
@@ -277,14 +277,13 @@
         return SCENARIOS_PREFIX + file.getName();
     }
 
+    /** Exports the layout of the layered view ({@link IViewpoint#LAYERED_VIEWPOINT}) of a model to a CSV separated file */
     public static void exportLayout(IArchimateModel model, File layoutFile, File owlFile) throws FileNotFoundException {
         exportLayout(layoutFile, getDefaultIRI(owlFile), getLayeredView(model));
     }
 
-    /** Exports the layout of the layered view ({@link IViewpoint#LAYERED_VIEWPOINT}) of a model to a CSV separated file */
-    public static boolean exportLayout(IArchimateModel model, File layoutFile, String defaultIRI, String viewName)
+    public static boolean exportLayout(IArchimateModel model, File layoutFile, String ontologyIRI, String viewName)
             throws FileNotFoundException {
-        System.out.println("OWLExport.exportLayout()");
         ArchimateDiagramModel view = null;
         if (viewName != null) {
             System.out.print("Trying to find view '" + viewName + "'...  ");
@@ -314,7 +313,11 @@
             }
         }
 
-        return exportLayout(layoutFile, defaultIRI, view);
+        if (ontologyIRI == null || ontologyIRI.trim().length() == 0) {
+            ontologyIRI = getDefaultIRI(layoutFile);
+        }
+
+        return exportLayout(layoutFile, ontologyIRI, view);
     }
 
     /** Exports the layout of a model to a CSV separated file */