diff --git a/MapTerrainConverter/main.swift b/MapTerrainConverter/main.swift
index c5d9b9fdb5..dce7305bdc 100644
--- a/MapTerrainConverter/main.swift
+++ b/MapTerrainConverter/main.swift
@@ -8,23 +8,23 @@
 
 import Foundation
 
-struct GameFile : Codable {
-    public let hexMap : HexMap
+struct OldGameFile : Codable {
+    public let hexMap : OldHexMap
 }
 
 struct NewGameFile : Codable {
-    public let hexMap : NewHexMap
+    public let hexMap : HexMap
 }
 
 let deserializer = CroissantDeserializer()
-let fileUrl = URL(fileURLWithPath: "/Users/dancrosby/CodingProjects/github/eagle0/server/installdata/usr/local/share/eagle0/startfiles/bigfightWithRiver.e0g")
+let fileUrl = URL(fileURLWithPath: "/Users/dancrosby/CodingProjects/github/eagle0/server/installdata/usr/local/share/eagle0/startfiles/narrowWithRiver.e0g")
 let data = try! Data(contentsOf: fileUrl)
 
-let gameFile = CroissantDeserializer.deserialize(GameFile.self, from: data)!
-let oldMap = gameFile.hexMap
-let newGameFile = NewGameFile(hexMap: NewHexMap(oldMap: oldMap))
+let oldGameFile = CroissantDeserializer.deserialize(OldGameFile.self, from: data)!
+let oldMap = oldGameFile.hexMap
+let newGameFile = NewGameFile(hexMap: HexMap(oldMap: oldMap))
 let newData = newGameFile.croissantEncodedData!
 
-let newUrl = URL(fileURLWithPath: "/Users/dancrosby/CodingProjects/github/eagle0/server/installdata/usr/local/share/eagle0/startfiles/bigfightWithRiver.e0g_")
+let newUrl = URL(fileURLWithPath: "/Users/dancrosby/CodingProjects/github/eagle0/server/installdata/usr/local/share/eagle0/startfiles/narrowWithRiver.e0g_")
 try! newData.write(to: newUrl)