diff --git a/Antlr4.Runtime/Antlr4.Runtime.csproj b/Antlr4.Runtime/Antlr4.Runtime.csproj
index 13a6956a8..0f2512cc2 100644
--- a/Antlr4.Runtime/Antlr4.Runtime.csproj
+++ b/Antlr4.Runtime/Antlr4.Runtime.csproj
@@ -132,9 +132,9 @@
     <Compile Include="Misc\NotNullAttribute.cs" />
     <Compile Include="Misc\OrderedHashSet`1.cs" />
     <Compile Include="Misc\ParseCanceledException.cs" />
-    <Compile Include="Misc\RuleDependencyChecker.cs" />
-    <Compile Include="Misc\RuleDependencyProcessor.cs" />
-    <Compile Include="Misc\TestRig.cs" />
+    <None Include="Misc\RuleDependencyChecker.cs" />
+    <None Include="Misc\RuleDependencyProcessor.cs" />
+    <None Include="Misc\TestRig.cs" />
     <Compile Include="Misc\Utils.cs" />
     <Compile Include="NoViableAltException.cs" />
     <Compile Include="Parser.cs" />