Index: applications/editors/josm/plugins/trustosm/src/org/openstreetmap/josm/plugins/trustosm/TrustOSMplugin.java
===================================================================
--- applications/editors/josm/plugins/trustosm/src/org/openstreetmap/josm/plugins/trustosm/TrustOSMplugin.java	(revision 31945)
+++ applications/editors/josm/plugins/trustosm/src/org/openstreetmap/josm/plugins/trustosm/TrustOSMplugin.java	(revision 32287)
@@ -72,6 +72,6 @@
         checkForUnrestrictedPolicyFiles();
         // register new SigImporter and SigExporter
-        ExtensionFileFilter.importers.add(new SigImporter());
-        ExtensionFileFilter.exporters.add(new SigExporter());
+        ExtensionFileFilter.addImporter(new SigImporter());
+        ExtensionFileFilter.addExporter(new SigExporter());
 
         gpg = new TrustGPG();