diff --git a/src/OneWare.OssCadSuiteIntegration/Loaders/OpenFpgaLoader.cs b/src/OneWare.OssCadSuiteIntegration/Loaders/OpenFpgaLoader.cs
index 771bdde49..ff90310df 100644
--- a/src/OneWare.OssCadSuiteIntegration/Loaders/OpenFpgaLoader.cs
+++ b/src/OneWare.OssCadSuiteIntegration/Loaders/OpenFpgaLoader.cs
@@ -69,6 +69,9 @@ public async Task DownloadAsync(UniversalFpgaProjectRoot project)
             case "bit":
                 openFpgaLoaderArguments.Add("./build/pack.bit");
                 break;
+            case "fs":
+                openFpgaLoaderArguments.Add("./build/pack.fs");
+                break;
             default:
                 outputService.WriteLine($"Could not find output type: {bitstreamFormat}");
                 return;
diff --git a/src/OneWare.OssCadSuiteIntegration/ViewModels/OpenFpgaLoaderSettingsViewModel.cs b/src/OneWare.OssCadSuiteIntegration/ViewModels/OpenFpgaLoaderSettingsViewModel.cs
index 3e17e18eb..d97e5d113 100644
--- a/src/OneWare.OssCadSuiteIntegration/ViewModels/OpenFpgaLoaderSettingsViewModel.cs
+++ b/src/OneWare.OssCadSuiteIntegration/ViewModels/OpenFpgaLoaderSettingsViewModel.cs
@@ -50,7 +50,8 @@ public OpenFpgaLoaderSettingsViewModel(UniversalFpgaProjectRoot projectRoot, IFp
         _inputBitstreamFormat = new ComboBoxSetting("Pack output format",
             defaultProperties.GetValueOrDefault("openFpgaLoaderBitstreamFormat") ?? "", [
                 "bin",
-                "bit"
+                "bit",
+                "fs"
             ])
         {
             HoverDescription = "Set Pack tool output format"