Index: /trunk/test/unit/org/openstreetmap/josm/gui/preferences/imagery/ImageryPreferenceTestIT.java
===================================================================
--- /trunk/test/unit/org/openstreetmap/josm/gui/preferences/imagery/ImageryPreferenceTestIT.java	(revision 14537)
+++ /trunk/test/unit/org/openstreetmap/josm/gui/preferences/imagery/ImageryPreferenceTestIT.java	(revision 14538)
@@ -162,5 +162,5 @@
         // Check if we have received an error message
         String error = helper.detectErrorMessage(new String(data, StandardCharsets.UTF_8));
-        addError(info, url + " -> " + (error != null ? error : defaultMessage));
+        addError(info, url + " -> " + (error != null ? error.split("\\n")[0] : defaultMessage));
     }