Index: /trunk/src/org/openstreetmap/josm/gui/dialogs/FilterDialog.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/gui/dialogs/FilterDialog.java	(revision 17147)
+++ /trunk/src/org/openstreetmap/josm/gui/dialogs/FilterDialog.java	(revision 17148)
@@ -366,5 +366,5 @@
     public void updateDialogHeader() {
         SwingUtilities.invokeLater(() -> setTitle(
-                tr("Filter Hidden:{0} Disabled:{1}",
+                tr("Filter Hidden: {0} Disabled: {1}",
                         filterModel.model.getDisabledAndHiddenCount(), filterModel.model.getDisabledCount())));
     }