Index: applications/editors/josm/plugins/utilsplugin2/src/org/openstreetmap/josm/plugins/utilsplugin2/actions/SplitObjectAction.java
===================================================================
--- applications/editors/josm/plugins/utilsplugin2/src/org/openstreetmap/josm/plugins/utilsplugin2/actions/SplitObjectAction.java	(revision 34822)
+++ applications/editors/josm/plugins/utilsplugin2/src/org/openstreetmap/josm/plugins/utilsplugin2/actions/SplitObjectAction.java	(revision 34824)
@@ -97,9 +97,8 @@
                         continue;
                     }
-                    int last = w.getNodesCount() - 1;
-                    // Only closed ways with at least four nodes
+                    // Only closed ways with at least four distinct nodes
                     // (i.e. five members since the first/last is listed twice)
                     // can be split into two objects
-                    if (last <= 4 || !w.isClosed()) {
+                    if (w.getNodesCount() < 5 || !w.isClosed()) {
                         continue;
                     }