Index: /trunk/src/org/openstreetmap/josm/actions/relation/EditRelationAction.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/actions/relation/EditRelationAction.java	(revision 6727)
+++ /trunk/src/org/openstreetmap/josm/actions/relation/EditRelationAction.java	(revision 6728)
@@ -3,4 +3,5 @@
 
 import static org.openstreetmap.josm.tools.I18n.tr;
+import static org.openstreetmap.josm.tools.I18n.trn;
 
 import java.awt.event.ActionEvent;
@@ -69,7 +70,9 @@
         if (!isEnabled() || relations.isEmpty()) return;
         if (relations.size() > Main.pref.getInteger("warn.open.maxrelations", 5)) {
+            /* I18N english text for value 1 makes no real sense, never called for values <= maxrel (usually 5) */
             if (JOptionPane.OK_OPTION != JOptionPane.showConfirmDialog(Main.parent, 
-                    "<html>"+tr("You are about to open <b>{0}</b> different relation editors simultaneously.<br/>Do you want to continue ?", 
-                            relations.size())+"</html>", 
+                    "<html>"+trn("You are about to open <b>{0}</b> different relation editor simultaneously.<br/>Do you want to continue ?", 
+                            "You are about to open <b>{0}</b> different relation editors simultaneously.<br/>Do you want to continue ?", 
+                            relations.size(), relations.size())+"</html>", 
                     tr("Confirmation"), JOptionPane.OK_CANCEL_OPTION, JOptionPane.WARNING_MESSAGE)) {
                 return;
