diff --git a/src/WinSW.Tests/CommandLineTests.cs b/src/WinSW.Tests/CommandLineTests.cs
index 3c711b2..d8eb883 100644
--- a/src/WinSW.Tests/CommandLineTests.cs
+++ b/src/WinSW.Tests/CommandLineTests.cs
@@ -27,7 +27,7 @@ namespace WinSW.Tests
                 Assert.Equal(ServiceControllerStatus.Stopped, controller.Status);
                 Assert.Equal(ServiceType.Win32OwnProcess, controller.ServiceType);
 
-#if NETFRAMEWORK
+#if NET
                 InterProcessCodeCoverageSession session = null;
                 try
                 {
diff --git a/src/WinSW.Tests/NativeMethods.txt b/src/WinSW.Tests/NativeMethods.txt
new file mode 100644
index 0000000..2c9cb77
--- /dev/null
+++ b/src/WinSW.Tests/NativeMethods.txt
@@ -0,0 +1 @@
+Windows.Win32.System.Diagnostics.Debug.DebugCreate
diff --git a/src/WinSW.Tests/Util/InterProcessCodeCoverageSession.cs b/src/WinSW.Tests/Util/InterProcessCodeCoverageSession.cs
index 6ccef86..fb5f515 100644
--- a/src/WinSW.Tests/Util/InterProcessCodeCoverageSession.cs
+++ b/src/WinSW.Tests/Util/InterProcessCodeCoverageSession.cs
@@ -6,6 +6,7 @@ using System.Runtime.InteropServices;
 using System.Threading;
 using Microsoft.Diagnostics.Runtime;
 using Microsoft.Diagnostics.Runtime.Interop;
+using Windows.Win32;
 using WinSW.Native;
 using Xunit;
 
@@ -36,20 +37,19 @@ namespace WinSW.Tests.Util
             Assert.True(processId >= 0);
 
             var guid = new Guid("27fe5639-8407-4f47-8364-ee118fb08ac8");
-            int hr = Native.DebugCreate(guid, out object unknown);
-            AssertEx.Succeeded(hr);
+            PInvoke.DebugCreate(guid, out object unknown).ThrowOnFailure();
 
             var client = (IDebugClient)unknown;
             this.control = (IDebugControl)unknown;
 
-            hr = client.AttachProcess(0, (uint)processId, DEBUG_ATTACH.DEFAULT);
+            int hr = client.AttachProcess(0, (uint)processId, DEBUG_ATTACH.DEFAULT);
             AssertEx.Succeeded(hr);
 
             hr = client.SetEventCallbacks(this);
             AssertEx.Succeeded(hr);
 
             var pointer = Marshal.GetIUnknownForObject(client);
-            Assert.Equal(1, Marshal.Release(pointer));
+            Assert.Equal(3, Marshal.Release(pointer));
 
             target = DataTarget.CreateFromDbgEng(pointer);
 
@@ -181,11 +181,5 @@ namespace WinSW.Tests.Util
         {
             throw new NotImplementedException();
         }
-
-        private static class Native
-        {
-            [DllImport("dbgeng.dll")]
-            internal static extern int DebugCreate(in Guid InterfaceId, [MarshalAs(UnmanagedType.IUnknown)] out object Interface);
-        }
     }
 }
diff --git a/src/WinSW.Tests/WinSW.Tests.csproj b/src/WinSW.Tests/WinSW.Tests.csproj
index 6288ec4..1b5b35c 100644
--- a/src/WinSW.Tests/WinSW.Tests.csproj
+++ b/src/WinSW.Tests/WinSW.Tests.csproj
@@ -13,6 +13,10 @@
     <PackageReference Include="Microsoft.Diagnostics.Runtime" Version="2.0.226801" />
     <PackageReference Include="Microsoft.Diagnostics.Runtime.Utilities" Version="2.0.0-rc.20303.3" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.4.1" />
+    <PackageReference Include="Microsoft.Windows.CsWin32" Version="0.2.188-beta">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
+    </PackageReference>
     <PackageReference Include="xunit" Version="2.4.2" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.5">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>