diff --git a/src/part/canvasedge.cpp b/src/part/canvasedge.cpp
--- a/src/part/canvasedge.cpp
+++ b/src/part/canvasedge.cpp
@@ -320,6 +320,7 @@
       }
       p->setPen(pen);
 //       qCDebug(KGRAPHVIEWERLIB_LOG) << edge()->fromNode()->id() << "->" << edge()->toNode()->id() << "drawPolyline" << edge()->color(0) << polygon;
+      polygon << polygon[0];
       p->drawPolyline(polygon);
       p->setPen(oldPen);
       p->setBrush(oldBrush);