diff --git a/Barotrauma/BarotraumaShared/Source/Utils/SaveUtil.cs b/Barotrauma/BarotraumaShared/Source/Utils/SaveUtil.cs
index 247fc0382..825554fe0 100644
--- a/Barotrauma/BarotraumaShared/Source/Utils/SaveUtil.cs
+++ b/Barotrauma/BarotraumaShared/Source/Utils/SaveUtil.cs
@@ -40,9 +40,9 @@ namespace Barotrauma
 
             try
             {
-                string subPath = Path.Combine(tempPath, Submarine.MainSub.Name + ".sub");
                 if (Submarine.MainSub != null)
                 {
+                    string subPath = Path.Combine(tempPath, Submarine.MainSub.Name + ".sub");
                     if (Submarine.Loaded.Contains(Submarine.MainSub))
                     {
                         Submarine.MainSub.FilePath = subPath;