diff --git a/OpenRA.Utility/Command.cs b/OpenRA.Utility/Command.cs
index 757355245f..0e6db9e29d 100644
--- a/OpenRA.Utility/Command.cs
+++ b/OpenRA.Utility/Command.cs
@@ -338,7 +338,11 @@ namespace OpenRA.Utility
 		public static void ExtractTraitDocs(string[] args)
 		{
 			Game.modData = new ModData(args[1]);
-			FileSystem.LoadFromManifest(Game.modData.Manifest);
+
+			FileSystem.UnmountAll();
+			foreach (var dir in Game.modData.Manifest.Folders)
+				FileSystem.Mount(dir);
+
 			Rules.LoadRules(Game.modData.Manifest, new Map());
 
 			Console.WriteLine("## Documentation");