diff --git a/apps/backend/Simulation/Model/ShipRuntimeModels.cs b/apps/backend/Simulation/Model/ShipRuntimeModels.cs
index a5a7724..4b55df9 100644
--- a/apps/backend/Simulation/Model/ShipRuntimeModels.cs
+++ b/apps/backend/Simulation/Model/ShipRuntimeModels.cs
@@ -19,7 +19,7 @@ public sealed class ShipRuntime
   public float ActionTimer { get; set; }
   public Dictionary<string, float> Inventory { get; } = new(StringComparer.Ordinal);
 
-  public string DockedStationId { get; set; }
+  public string? DockedStationId { get; set; }
   public int? AssignedDockingPadIndex { get; set; }
   public string? CommanderId { get; set; }
   public string? PolicySetId { get; set; }