diff --git a/NodeNetworkToolkit/Group/AddEndpointDropPanel/AddEndpointDropPanelViewModel.cs b/NodeNetworkToolkit/Group/AddEndpointDropPanel/AddEndpointDropPanelViewModel.cs
index eb16fb2..4112b99 100644
--- a/NodeNetworkToolkit/Group/AddEndpointDropPanel/AddEndpointDropPanelViewModel.cs
+++ b/NodeNetworkToolkit/Group/AddEndpointDropPanel/AddEndpointDropPanelViewModel.cs
@@ -51,6 +51,7 @@ public AddEndpointDropPanelViewModel(bool isOnSubnetEntrance = false, bool isOnS
             {
                 var network = isOnSubnet ? NodeGroupIOBinding.SubNetwork : NodeGroupIOBinding.SuperNetwork;
                 var pendingConn = network.PendingConnection;
+                network.RemovePendingConnection();
 
                 NodeInputViewModel input = null;
                 NodeOutputViewModel output = null;