diff --git a/src/BreCalClient/ShipListDialog.xaml.cs b/src/BreCalClient/ShipListDialog.xaml.cs
index e22d814..5d862ab 100644
--- a/src/BreCalClient/ShipListDialog.xaml.cs
+++ b/src/BreCalClient/ShipListDialog.xaml.cs
@@ -108,6 +108,8 @@ namespace BreCalClient
                         this.dataGridShips.ItemsSource = null;
                         BreCalLists.AllShips.Add(shipModel);
                         BreCalLists.Ships.Add(shipModel);
+                        if(!BreCalLists.ShipLookupDict.TryAdd(id.VarId, shipModel))
+                            BreCalLists.ShipLookupDict[id.VarId] = shipModel;
                         this.dataGridShips.ItemsSource = BreCalLists.AllShips;
                     }
                 }