diff --git a/Wabbajack.Common/Consts.cs b/Wabbajack.Common/Consts.cs
index 55af331f..4aa71c9a 100644
--- a/Wabbajack.Common/Consts.cs
+++ b/Wabbajack.Common/Consts.cs
@@ -9,7 +9,6 @@ namespace Wabbajack.Common
     {
         public static bool TestMode { get; set; } = false;
 
-        public static string ModlistExtension = ".modlist_v2";
         public static string GameFolderFilesDir = "Game Folder Files";
         public static string LOOTFolderFilesDir = "LOOT Config Files";
         public static string BSACreationDir = "TEMP_BSA_FILES";
diff --git a/Wabbajack.Common/ExtensionManager.cs b/Wabbajack.Common/ExtensionManager.cs
new file mode 100644
index 00000000..3ca28181
--- /dev/null
+++ b/Wabbajack.Common/ExtensionManager.cs
@@ -0,0 +1,7 @@
+namespace Wabbajack.Common
+{
+    public class ExtensionManager
+    {
+        public static string Extension = ".wabbajack";
+    }
+}
diff --git a/Wabbajack.Common/Wabbajack.Common.csproj b/Wabbajack.Common/Wabbajack.Common.csproj
index 09d7263b..586a56d4 100644
--- a/Wabbajack.Common/Wabbajack.Common.csproj
+++ b/Wabbajack.Common/Wabbajack.Common.csproj
@@ -108,6 +108,7 @@
     <Compile Include="ChildProcessTracker.cs" />
     <Compile Include="Consts.cs" />
     <Compile Include="DynamicIniData.cs" />
+    <Compile Include="ExtensionManager.cs" />
     <Compile Include="FileExtractor.cs" />
     <Compile Include="GameMetaData.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
diff --git a/Wabbajack.Lib/Compiler.cs b/Wabbajack.Lib/Compiler.cs
index 98aeced9..35c2ce07 100644
--- a/Wabbajack.Lib/Compiler.cs
+++ b/Wabbajack.Lib/Compiler.cs
@@ -67,7 +67,7 @@ namespace Wabbajack.Lib
         public string MO2ProfileDir => Path.Combine(MO2Folder, "profiles", MO2Profile);
 
         public string ModListOutputFolder => "output_folder";
-        public string ModListOutputFile => MO2Profile + Consts.ModlistExtension;
+        public string ModListOutputFile => MO2Profile + ExtensionManager.Extension;
 
         public List<Directive> InstallDirectives { get; private set; }
         internal UserStatus User { get; private set; }
diff --git a/Wabbajack/UI/ModeSelectionWindow.xaml.cs b/Wabbajack/UI/ModeSelectionWindow.xaml.cs
index ce390ccf..821d0695 100644
--- a/Wabbajack/UI/ModeSelectionWindow.xaml.cs
+++ b/Wabbajack/UI/ModeSelectionWindow.xaml.cs
@@ -90,7 +90,7 @@ namespace Wabbajack
         private void InstallFromList_Click(object sender, RoutedEventArgs e)
         {
             OpenMainWindow(RunMode.Install, 
-                UIUtils.OpenFileDialog($"*{Consts.ModlistExtension}|*{Consts.ModlistExtension}"));
+                UIUtils.OpenFileDialog($"*{ExtensionManager.Extension}|*{ExtensionManager.Extension}"));
         }
     }
 }