diff --git a/Knossos.NET/ViewModels/Windows/CleanupKnossosLibraryViewModel.cs b/Knossos.NET/ViewModels/Windows/CleanupKnossosLibraryViewModel.cs
index a22da36d..b70568fb 100644
--- a/Knossos.NET/ViewModels/Windows/CleanupKnossosLibraryViewModel.cs
+++ b/Knossos.NET/ViewModels/Windows/CleanupKnossosLibraryViewModel.cs
@@ -29,6 +29,13 @@ await Task.Run(async () =>
                     var newestMod = new Dictionary<string, string>();
                     foreach (var mod in Knossos.GetInstalledModList(null))
                     {
+                        //Always skip retail
+                        if(mod.id == "FS2")
+                        {
+                            modsToKeep.Add(mod);
+                            continue;
+                        }
+
                         //Always keep mods in dev mode
                         if (mod.devMode)
                         {