diff --git a/python/mycelia/mycelia/nxwrapper.py b/python/mycelia/mycelia/nxwrapper.py
index ff2a53f..4ef5624 100644
--- a/python/mycelia/mycelia/nxwrapper.py
+++ b/python/mycelia/mycelia/nxwrapper.py
@@ -214,6 +214,7 @@ def add_edge(self, u, v, attr_dict=None, stop=True, **attr):
             if stop:
                 self.stop_layout()
             myid = self.server.add_edge(myid_u, myid_v)
+            myid = self.server.add_edge(myid_v, myid_u)
             if stop:
                 self.resume_layout()
             # bidirectional
@@ -240,6 +241,7 @@ def remove_edge(self, u, v, stop=True):
             if stop:
                 self.stop_layout()
             self.server.delete_edge(myid_u, myid_v)
+            self.server.delete_edge(myid_v, myid_u)
             if stop:
                 self.resume_layout()
 
diff --git a/src/mycelia.cpp b/src/mycelia.cpp
index 739c72f..d060d0d 100644
--- a/src/mycelia.cpp
+++ b/src/mycelia.cpp
@@ -309,7 +309,6 @@ void Mycelia::buildGraphList(MyceliaDataItem* dataItem) const
 
 void Mycelia::drawEdge(const Edge& edge, MyceliaDataItem* dataItem) const
 {
-    std::cout << "\nsource/target = " << edge.source << " " << edge.target << std::endl;
     drawEdge(gCopy->getNodePosition(edge.source),
              gCopy->getNodePosition(edge.target),
              gCopy->getEdgeMaterialFromId(edge.material),