Index: applications/editors/josm/plugins/simplifyarea/src/org/openstreetmap/josm/plugins/simplifyarea/SimplifyAreaAction.java
===================================================================
--- applications/editors/josm/plugins/simplifyarea/src/org/openstreetmap/josm/plugins/simplifyarea/SimplifyAreaAction.java	(revision 34586)
+++ applications/editors/josm/plugins/simplifyarea/src/org/openstreetmap/josm/plugins/simplifyarea/SimplifyAreaAction.java	(revision 34972)
@@ -40,4 +40,5 @@
 import org.openstreetmap.josm.tools.ImageProvider;
 import org.openstreetmap.josm.tools.Shortcut;
+import org.openstreetmap.josm.tools.Utils;
 
 public final class SimplifyAreaAction extends JosmAction {
@@ -108,5 +109,5 @@
             }
         }
-        final Collection<Way> ways = OsmPrimitive.getFilteredSet(selection, Way.class);
+        final Collection<Way> ways = Utils.filteredCollection(selection, Way.class);
         if (ways.isEmpty()) {
             alertSelectAtLeastOneWay();