Index: applications/editors/josm/plugins/slippymap/build.xml
===================================================================
--- applications/editors/josm/plugins/slippymap/build.xml	(revision 12104)
+++ applications/editors/josm/plugins/slippymap/build.xml	(revision 12588)
@@ -42,4 +42,5 @@
         <attribute name="Plugin-Description" value="Displays a slippy map tile grid, and tile status info" />
         <attribute name="Plugin-Version" value="${version.entry.commit.revision}"/>
+        <attribute name="Plugin-Mainversion" value="1180"/>
         <attribute name="Plugin-Date" value="${version.entry.commit.date}"/>
       </manifest>
Index: applications/editors/josm/plugins/slippymap/src/org/openstreetmap/josm/plugins/slippymap/SlippyMapPreferenceSetting.java
===================================================================
--- applications/editors/josm/plugins/slippymap/src/org/openstreetmap/josm/plugins/slippymap/SlippyMapPreferenceSetting.java	(revision 12104)
+++ applications/editors/josm/plugins/slippymap/src/org/openstreetmap/josm/plugins/slippymap/SlippyMapPreferenceSetting.java	(revision 12588)
@@ -58,8 +58,9 @@
      * Someone pressed the "ok" button
      */
-    public void ok()
+    public boolean ok()
     {
         Main.pref.put(SlippyMapPreferences.PREFERENCE_TILE_URL, tileSourceCombo
                 .getSelectedItem().toString());
+        return false;
     }
 }