diff --git a/qad_blockview/blockview.cpp b/qad_blockview/blockview.cpp
index 3779281..8938512 100644
--- a/qad_blockview/blockview.cpp
+++ b/qad_blockview/blockview.cpp
@@ -223,15 +223,18 @@ bool BlockView::eventFilter(QObject * o, QEvent * e) {
 				unmarkPins(true);
 				reconnectAll();
 				tmp_bus.hide();
+				tmp_bus.clear();
 			}
 			if (new_branch && mm_cancel) {
 				new_branch = false;
 				tmp_bus.hide();
+				tmp_bus.clear();
 			}
 			if (moved && mm_cancel) {
 				moved = false;
 				restoreSelState();
 				tmp_bus.hide();
+				tmp_bus.clear();
 			}
 			if (mm_cancel) return true;
 			mm_mods = me->modifiers();
@@ -481,6 +484,7 @@ bool BlockView::eventFilter(QObject * o, QEvent * e) {
 				}
 				unmarkPins();
 				tmp_bus.hide();
+				tmp_bus.clear();
 				reconnectAll();
 			}
 			clearBusStates();
@@ -1098,6 +1102,7 @@ bool BlockView::connectTmpToBus(BlockBusItem * bus) {
 		bus->segments << QPair<int, int>(lp + i, lp + i + 1);
 	bus->segments << QPair<int, int>(np, lp + tmp_bus.pol.size() - 1);
 	bus->updateGeometry();
+	tmp_bus.clear();
 	return true;
 }
 
@@ -1256,6 +1261,7 @@ void BlockView::newBranchAccept(BlockBusItem * item) {
 	item->updateGeometry();
 	emit actionEvent(BlockItemBase::BusAdd, QList<QGraphicsItem*>() << item);
 	emit connectionsChanged();
+	tmp_bus.clear();
 }
 
 
@@ -1264,6 +1270,7 @@ void BlockView::newBranchCancel() {
 	//qDebug() << "cancel";
 	new_branch = false;
 	tmp_bus.hide();
+	tmp_bus.clear();
 }