diff --git a/src/RealAntennasProject/RACommNetVessel.cs b/src/RealAntennasProject/RACommNetVessel.cs
index 1be707c..322dab3 100644
--- a/src/RealAntennasProject/RACommNetVessel.cs
+++ b/src/RealAntennasProject/RACommNetVessel.cs
@@ -94,7 +94,7 @@ protected override void OnDestroy()
             base.OnDestroy();
             comm?.Net.Remove(comm);
             comm = null;
-            vessel.connection = null;
+            if (vessel) vessel.connection = null;
         }
 
         protected override void UpdateComm()