Index: trunk/src/org/openstreetmap/josm/gui/dialogs/properties/HelpAction.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/dialogs/properties/HelpAction.java	(revision 15486)
+++ trunk/src/org/openstreetmap/josm/gui/dialogs/properties/HelpAction.java	(revision 15490)
@@ -77,8 +77,8 @@
         if (tagTable.getSelectedRowCount() == 1) {
             int row = tagTable.getSelectedRow();
-            String key = Utils.encodeUrl(tagKeySupplier.apply(row));
+            String key = tagKeySupplier.apply(row);
             Map<String, Integer> m = tagValuesSupplier.apply(row);
             if (!m.isEmpty()) {
-                String val = Utils.encodeUrl(m.entrySet().iterator().next().getKey());
+                String val = m.entrySet().iterator().next().getKey();
                 MainApplication.worker.execute(() -> displayTagHelp(key, val));
             }