Index: trunk/src/org/openstreetmap/josm/actions/AbstractMergeAction.java
===================================================================
--- trunk/src/org/openstreetmap/josm/actions/AbstractMergeAction.java	(revision 14331)
+++ trunk/src/org/openstreetmap/josm/actions/AbstractMergeAction.java	(revision 14332)
@@ -110,8 +110,5 @@
         pnl.add(new JLabel(label), GBC.eol());
         pnl.add(layerList, GBC.eol().fill(GBC.HORIZONTAL));
-        if (GraphicsEnvironment.isHeadless()) {
-            // return first layer in headless mode, for unit tests
-            return targetLayers[0];
-        }
+
         ExtendedDialog ed = new ExtendedDialog(MainApplication.getMainFrame(), title, buttonText, tr("Cancel"));
         ed.setButtonIcons(buttonIcon, "cancel");
@@ -131,7 +128,5 @@
         String message = tr("<html>There are no layers the source layer<br>''{0}''<br>could be merged to.</html>",
                 Utils.escapeReservedCharactersHTML(sourceLayer.getName()));
-        if (!GraphicsEnvironment.isHeadless()) {
-            JOptionPane.showMessageDialog(MainApplication.getMainFrame(), message, tr("No target layers"), JOptionPane.WARNING_MESSAGE);
-        }
+        JOptionPane.showMessageDialog(MainApplication.getMainFrame(), message, tr("No target layers"), JOptionPane.WARNING_MESSAGE);
     }
 }
Index: trunk/src/org/openstreetmap/josm/gui/layer/gpx/DownloadWmsAlongTrackAction.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/layer/gpx/DownloadWmsAlongTrackAction.java	(revision 14331)
+++ trunk/src/org/openstreetmap/josm/gui/layer/gpx/DownloadWmsAlongTrackAction.java	(revision 14332)
@@ -118,7 +118,5 @@
         List<AbstractTileSourceLayer> targetLayers = MainApplication.getLayerManager().getLayersOfType(AbstractTileSourceLayer.class);
         if (targetLayers.isEmpty()) {
-            if (!GraphicsEnvironment.isHeadless()) {
-                warnNoImageryLayers();
-            }
+            warnNoImageryLayers();
             return null;
         }
