diff --git a/src/Adapter/MSTestAdapter.PlatformServices/MSTestAdapter.PlatformServices.csproj b/src/Adapter/MSTestAdapter.PlatformServices/MSTestAdapter.PlatformServices.csproj
index 9144dc4f3e..99ae189a4b 100644
--- a/src/Adapter/MSTestAdapter.PlatformServices/MSTestAdapter.PlatformServices.csproj
+++ b/src/Adapter/MSTestAdapter.PlatformServices/MSTestAdapter.PlatformServices.csproj
@@ -13,6 +13,8 @@
     <RootNamespace>Microsoft.VisualStudio.TestPlatform.MSTestAdapter.PlatformServices</RootNamespace>
     <DefineConstants>$(DefineConstants);TRACE</DefineConstants>
 
+    <!-- MSTest.TestAdapter bundles this assembly into its buildTransitive folder, so this project is never packed on its own. -->
+    <IsPackable>false</IsPackable>
     <DefineConstants>$(DefineConstants);EXCLUDE_OS_POLYFILL</DefineConstants>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>