Index: /applications/editors/josm/plugins/graphview/src/org/openstreetmap/josm/plugins/graphview/plugin/preferences/VehiclePropertyStringParser.java
===================================================================
--- /applications/editors/josm/plugins/graphview/src/org/openstreetmap/josm/plugins/graphview/plugin/preferences/VehiclePropertyStringParser.java	(revision 26464)
+++ /applications/editors/josm/plugins/graphview/src/org/openstreetmap/josm/plugins/graphview/plugin/preferences/VehiclePropertyStringParser.java	(revision 26465)
@@ -45,5 +45,5 @@
         tr("Tracktype grades must be given as integers between 0 and 5.");
     public static final String ERROR_SURFACE =
-        tr("Surface values must not contain any of the following characters: '','', '''{''',  '''}''', ''='', ''|''");
+        tr("Surface values must not contain any of the following characters: '','', '' '{' '',  '' '}' '', ''='', ''|''");
 
     private static final List<Character> FORBIDDEN_SURFACE_CHARS =