diff --git a/src/libraries/Microsoft.Extensions.Caching.Abstractions/tests/Microsoft.Extensions.Caching.Abstractions.Tests.csproj b/src/libraries/Microsoft.Extensions.Caching.Abstractions/tests/Microsoft.Extensions.Caching.Abstractions.Tests.csproj
index 897dba6387fdc2..4d094f0cb00d21 100644
--- a/src/libraries/Microsoft.Extensions.Caching.Abstractions/tests/Microsoft.Extensions.Caching.Abstractions.Tests.csproj
+++ b/src/libraries/Microsoft.Extensions.Caching.Abstractions/tests/Microsoft.Extensions.Caching.Abstractions.Tests.csproj
@@ -5,6 +5,11 @@
     <EnableDefaultItems>true</EnableDefaultItems>
   </PropertyGroup>
 
+  <ItemGroup>
+    <!-- TrimmingTests are standalone console apps built by their own .TrimmingTests.proj, not part of the xunit test assembly. -->
+    <Compile Remove="TrimmingTests\**" />
+  </ItemGroup>
+
   <ItemGroup Condition="'$(TargetFrameworkIdentifier)' == '.NETFramework'">
     <ProjectReference Include="..\src\Microsoft.Extensions.Caching.Abstractions.csproj" />
     <Compile Include="$(CoreLibSharedDir)System\Runtime\CompilerServices\IsExternalInit.cs" Link="Common\System\Runtime\CompilerServices\IsExternalInit.cs" />