diff --git a/Directory.Build.props b/Directory.Build.props
index e7b415cbca..6de7d75cd6 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -26,6 +26,10 @@
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
 
+  <PropertyGroup Condition="'$(IsCompatibilityTest)' == 'true' and '$(MSBuildProjectExtension)' == '.csproj'">
+    <NoWarn>$(NoWarn);CS8305</NoWarn>
+  </PropertyGroup>
+
   <PropertyGroup>
     <_PropertySheetDisplayName>PowerToys.Root.Props</_PropertySheetDisplayName>
     <ForceImportBeforeCppProps>$(MsbuildThisFileDirectory)\Cpp.Build.props</ForceImportBeforeCppProps>