Index: trunk/src/org/openstreetmap/josm/gui/dialogs/properties/TagEditHelper.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/dialogs/properties/TagEditHelper.java	(revision 8329)
+++ trunk/src/org/openstreetmap/josm/gui/dialogs/properties/TagEditHelper.java	(revision 8330)
@@ -643,5 +643,5 @@
             final JLabel helpLabel = new JLabel(text);
             helpLabel.setFont(helpLabel.getFont().deriveFont(Font.PLAIN));
-            contentPane.add(helpLabel, GBC.eol().insets(1, 2, 1, 2));
+            contentPane.add(helpLabel, GBC.eol().fill(GridBagConstraints.HORIZONTAL).insets(1, 2, 1, 2));
             super.setContentPane(contentPane);
         }