diff --git a/ILSpy.AddIn/ILSpy.AddIn.csproj b/ILSpy.AddIn/ILSpy.AddIn.csproj
index 1f26eaea4..ca1bc52c7 100644
--- a/ILSpy.AddIn/ILSpy.AddIn.csproj
+++ b/ILSpy.AddIn/ILSpy.AddIn.csproj
@@ -117,8 +117,9 @@
     <AdditionalDependencies Include="$(ILSpyBuildPath)Mono.Cecil.dll" />
     <AdditionalDependencies Include="$(ILSpyBuildPath)Mono.Cecil.Pdb.dll" />
     <AdditionalDependencies Include="$(ILSpyBuildPath)ILSpy.BamlDecompiler.Plugin.dll" />
-	<AdditionalDependencies Include="$(ILSpyBuildPath)Microsoft.DiaSymReader*.dll" />
+	  <AdditionalDependencies Include="$(ILSpyBuildPath)Microsoft.DiaSymReader*.dll" />
   	<AdditionalDependencies Include="$(ILSpyBuildPath)OSVersionHelper.dll" />
+    <AdditionalDependencies Include="$(ILSpyBuildPath)Xceed.Wpf.AvalonDock.dll" />
   </ItemGroup>
 
   <ItemGroup>