diff --git a/test/Microsoft.AspNetCore.Razor.Runtime.Test/Runtime/TagHelpers/TagHelperDesignTimeDescriptorFactoryTest.cs b/test/Microsoft.AspNetCore.Razor.Runtime.Test/Runtime/TagHelpers/TagHelperDesignTimeDescriptorFactoryTest.cs
index 13d6445d6f..e35017fc87 100644
--- a/test/Microsoft.AspNetCore.Razor.Runtime.Test/Runtime/TagHelpers/TagHelperDesignTimeDescriptorFactoryTest.cs
+++ b/test/Microsoft.AspNetCore.Razor.Runtime.Test/Runtime/TagHelpers/TagHelperDesignTimeDescriptorFactoryTest.cs
@@ -33,7 +33,11 @@ namespace Microsoft.AspNetCore.Razor.Runtime.TagHelpers
         // These test assemblies don't really exist. They are used to look up corresponding XML for a fake assembly
         // which is based on the DocumentedTagHelper type.
         public static readonly string TestRoot =
+#if NET451
+            Path.GetFullPath(Path.Combine(Directory.GetCurrentDirectory(), "..", "..", "..", ".."));
+#else
             Path.GetFullPath(Path.Combine(Directory.GetCurrentDirectory(), "..", ".."));
+#endif
         public static readonly string DocumentedAssemblyLocation =
             Path.Combine(TestRoot, "TestFiles", "NotLocalized", "TagHelperDocumentation.dll");
         public static readonly string LocalizedDocumentedAssemblyLocation =
diff --git a/test/Microsoft.AspNetCore.Razor.Runtime.Test/Runtime/TagHelpers/XmlDocumentationProviderTest.cs b/test/Microsoft.AspNetCore.Razor.Runtime.Test/Runtime/TagHelpers/XmlDocumentationProviderTest.cs
index e85b99b8e3..b643f3590d 100644
--- a/test/Microsoft.AspNetCore.Razor.Runtime.Test/Runtime/TagHelpers/XmlDocumentationProviderTest.cs
+++ b/test/Microsoft.AspNetCore.Razor.Runtime.Test/Runtime/TagHelpers/XmlDocumentationProviderTest.cs
@@ -14,7 +14,11 @@ namespace Microsoft.AspNetCore.Razor.Runtime.TagHelpers
     public class XmlDocumentationProviderTest
     {
         private static readonly string TestRoot =
+#if NET451
+            Path.GetFullPath(Path.Combine(Directory.GetCurrentDirectory(), "..", "..", "..", ".."));
+#else
             Path.GetFullPath(Path.Combine(Directory.GetCurrentDirectory(), "..", ".."));
+#endif
         private static readonly string XmlTestFileLocation =
             TestRoot + "/TestFiles/NotLocalized/TagHelperDocumentation.xml";
         private static readonly TypeInfo DocumentedTagHelperTypeInfo = typeof(DocumentedTagHelper).GetTypeInfo();