diff --git a/src/tests/Directory.Build.targets b/src/tests/Directory.Build.targets
index 11c86348e22c2..cefb5e341a494 100644
--- a/src/tests/Directory.Build.targets
+++ b/src/tests/Directory.Build.targets
@@ -35,7 +35,7 @@
   <!-- Default priority building values. -->
   <PropertyGroup>
     <DisableProjectBuild Condition="'$(IsMergedTestRunnerAssembly)' == 'true' and $(BuildAsStandalone)">true</DisableProjectBuild>
-    <OutputType Condition="('$(IsMergedTestRunnerAssembly)' == 'true' and !$(BuildAsStandalone)) or '$(RequiresProcessIsolation)' == 'true'">Exe</OutputType>
+    <OutputType Condition="('$(IsMergedTestRunnerAssembly)' == 'true' and !$(BuildAsStandalone)) or ('$(RequiresProcessIsolation)' == 'true' and '$(CLRTestKind)' != 'SharedLibrary')">Exe</OutputType>
 
     <CLRTestKind Condition="'$(CLRTestKind)' == '' and '$(OutputType)' == 'Exe'">BuildAndRun</CLRTestKind>
     <CLRTestKind Condition="'$(CLRTestKind)' == ''">SharedLibrary</CLRTestKind>
diff --git a/src/tests/Loader/classloader/regressions/dev10_403582/genmeth.ilproj b/src/tests/Loader/classloader/regressions/dev10_403582/genmeth.ilproj
index eeb4fbd534a7c..b567c94322dce 100644
--- a/src/tests/Loader/classloader/regressions/dev10_403582/genmeth.ilproj
+++ b/src/tests/Loader/classloader/regressions/dev10_403582/genmeth.ilproj
@@ -1,7 +1,10 @@
 <Project Sdk="Microsoft.NET.Sdk.IL">
   <PropertyGroup>
+    <!-- Without process isolation, this support assembly gets copied to the merged wrapper folder -->
+    <!-- where it subsequently crashes the LLVM AOT compiler. -->
+    <RequiresProcessIsolation>true</RequiresProcessIsolation>
     <OutputType>Library</OutputType>
-    <CLRTestKind>BuildOnly</CLRTestKind>
+    <CLRTestKind>SharedLibrary</CLRTestKind>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="genmeth.il" />