Index: applications/editors/josm/plugins/pluginmanager/src/at/dallermassl/josm/plugin/pluginmanager/PluginManagerPreference.java
===================================================================
--- applications/editors/josm/plugins/pluginmanager/src/at/dallermassl/josm/plugin/pluginmanager/PluginManagerPreference.java	(revision 12588)
+++ applications/editors/josm/plugins/pluginmanager/src/at/dallermassl/josm/plugin/pluginmanager/PluginManagerPreference.java	(revision 12707)
@@ -90,5 +90,5 @@
         addSite.addActionListener(new ActionListener(){
             public void actionPerformed(ActionEvent e) {
-                String siteUrl = JOptionPane.showInputDialog(Main.parent, tr("Update Site Url"));
+                String siteUrl = JOptionPane.showInputDialog(Main.parent, tr("Update Site URL"));
                 if (siteUrl == null)
                     return;
@@ -101,5 +101,5 @@
                   siteListModel.addElement(site);
                 } catch(MalformedURLException mue) {
-                    JOptionPane.showMessageDialog(Main.parent, tr("Invalid Url"), tr("Error"), JOptionPane.ERROR_MESSAGE);
+                    JOptionPane.showMessageDialog(Main.parent, tr("Invalid URL"), tr("Error"), JOptionPane.ERROR_MESSAGE);
                     return;
                 }