Index: /trunk/src/org/openstreetmap/josm/actions/SessionSaveAction.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/actions/SessionSaveAction.java	(revision 18480)
+++ /trunk/src/org/openstreetmap/josm/actions/SessionSaveAction.java	(revision 18481)
@@ -263,5 +263,5 @@
                 final String path = removeFileOnSuccess.getPath();
                 GuiHelper.runInEDT(() -> {
-                    Notification notification = new Notification(tr("Could not delete file: {0}\r{1}", path, ex.getMessage()));
+                    Notification notification = new Notification(tr("Could not delete file: {0}<br>{1}", path, ex.getMessage()));
                     notification.setIcon(JOptionPane.WARNING_MESSAGE);
                     notification.show();