diff --git a/src/Microsoft.Windows.CsWin32/Generator.cs b/src/Microsoft.Windows.CsWin32/Generator.cs
index 80ca2932..62869d65 100644
--- a/src/Microsoft.Windows.CsWin32/Generator.cs
+++ b/src/Microsoft.Windows.CsWin32/Generator.cs
@@ -436,11 +436,10 @@ public Generator(string metadataLibraryPath, Docs? docs, GeneratorOptions option
         this.canCallCreateSpan = this.compilation?.GetTypeByMetadataName(typeof(MemoryMarshal).FullName)?.GetMembers("CreateSpan").Any() is true;
         this.canUseUnsafeAsRef = this.compilation?.GetTypeByMetadataName(typeof(Unsafe).FullName)?.GetMembers("AsRef").Any() is true;
         this.canUseUnsafeNullRef = this.compilation?.GetTypeByMetadataName(typeof(Unsafe).FullName)?.GetMembers("NullRef").Any() is true;
-        this.unscopedRefAttributePredefined = this.compilation?.GetTypeByMetadataName("System.Diagnostics.CodeAnalysis.UnscopedRefAttribute") is not null;
+        this.unscopedRefAttributePredefined = this.FindTypeSymbolIfAlreadyAvailable("System.Diagnostics.CodeAnalysis.UnscopedRefAttribute") is not null;
         this.getDelegateForFunctionPointerGenericExists = this.compilation?.GetTypeByMetadataName(typeof(Marshal).FullName)?.GetMembers(nameof(Marshal.GetDelegateForFunctionPointer)).Any(m => m is IMethodSymbol { IsGenericMethod: true }) is true;
         this.generateDefaultDllImportSearchPathsAttribute = this.compilation?.GetTypeByMetadataName(typeof(DefaultDllImportSearchPathsAttribute).FullName) is object;
-        if (this.compilation?.GetTypeByMetadataName("System.Runtime.Versioning.SupportedOSPlatformAttribute") is { } attribute
-            && (attribute.DeclaredAccessibility == Accessibility.Public || attribute.ContainingAssembly.GivesAccessTo(this.compilation.Assembly)))
+        if (this.FindTypeSymbolIfAlreadyAvailable("System.Runtime.Versioning.SupportedOSPlatformAttribute") is { } attribute)
         {
             this.generateSupportedOSPlatformAttributes = true;
             AttributeData usageAttribute = attribute.GetAttributes().Single(att => att.AttributeClass?.Name == nameof(AttributeUsageAttribute));
diff --git a/test/Microsoft.Windows.CsWin32.Tests/GeneratorTests.cs b/test/Microsoft.Windows.CsWin32.Tests/GeneratorTests.cs
index 9bbc1921..56100b61 100644
--- a/test/Microsoft.Windows.CsWin32.Tests/GeneratorTests.cs
+++ b/test/Microsoft.Windows.CsWin32.Tests/GeneratorTests.cs
@@ -1511,6 +1511,7 @@ public void ProjectReferenceBetweenTwoGeneratingProjects(bool internalsVisibleTo
         using var referencedGenerator = this.CreateGenerator(new GeneratorOptions { ClassName = "P1" }, referencedProject);
         Assert.True(referencedGenerator.TryGenerate("LockWorkStation", CancellationToken.None));
         Assert.True(referencedGenerator.TryGenerate("CreateFile", CancellationToken.None));
+        Assert.True(referencedGenerator.TryGenerate("RAWHID", CancellationToken.None));
         referencedProject = this.AddGeneratedCode(referencedProject, referencedGenerator);
         this.AssertNoDiagnostics(referencedProject);
 
@@ -1518,6 +1519,7 @@ public void ProjectReferenceBetweenTwoGeneratingProjects(bool internalsVisibleTo
         this.compilation = this.compilation.AddReferences(referencedProject.ToMetadataReference());
         this.generator = this.CreateGenerator(new GeneratorOptions { ClassName = "P2" });
         Assert.True(this.generator.TryGenerate("HidD_GetAttributes", CancellationToken.None));
+        Assert.True(this.generator.TryGenerate("RAWHID", CancellationToken.None));
         this.CollectGeneratedCode(this.generator);
         this.AssertNoDiagnostics();
     }