diff --git a/EduNetworkBuilder/Network.cs b/EduNetworkBuilder/Network.cs
index 21bcd1f..d74abd5 100644
--- a/EduNetworkBuilder/Network.cs
+++ b/EduNetworkBuilder/Network.cs
@@ -527,6 +527,7 @@ namespace EduNetworkBuilder
                 if (tItem is NetworkDevice)
                 {
                     tDevice = (NetworkDevice)tItem;
+                    if (tDevice.GetNetType() == NetworkComponentType.tree) continue; //Cannot select trees
                     int tsize = tDevice.Size;
                     tPoint = tDevice.myLocation();
                     if (tPoint.X + tsize >= area.X && tPoint.Y +tsize >= area.Y)