diff --git a/src/Simulation/AutoSubstitution/AutoSubstitution.csproj b/src/Simulation/AutoSubstitution/AutoSubstitution.csproj
index 4cd398f157c..636efa33244 100644
--- a/src/Simulation/AutoSubstitution/AutoSubstitution.csproj
+++ b/src/Simulation/AutoSubstitution/AutoSubstitution.csproj
@@ -15,4 +15,9 @@
     <PackageReference Include="Microsoft.Quantum.Compiler" Version="0.16.2105140327-beta" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="3.6.0" />
   </ItemGroup>
+
+  <ItemGroup>
+    <Compile Include="..\Common\DelaySign.cs" Link="Properties\DelaySign.cs" />
+  </ItemGroup>
+
 </Project>