diff --git a/src/tests/Interop/ICustomMarshaler/Primitives/ICustomMarshaler.cs b/src/tests/Interop/ICustomMarshaler/Primitives/ICustomMarshaler.cs
index 2b6a388c25baf..a8ef865e7a832 100644
--- a/src/tests/Interop/ICustomMarshaler/Primitives/ICustomMarshaler.cs
+++ b/src/tests/Interop/ICustomMarshaler/Primitives/ICustomMarshaler.cs
@@ -630,8 +630,6 @@ public static int Main(String[] args)
                 Parameter_MarshalerOnValueType_ThrowsMarshalDirectiveException();
                 Parameter_MarshalerOnPointer_ThrowsMarshalDirectiveException();
                 Parameter_NullICustomMarshaler_ThrowsTypeLoadException();
-                Parameter_MarshalerOnPointer_ThrowsMarshalDirectiveException();
-                Parameter_NullICustomMarshaler_ThrowsTypeLoadException();
                 Parameter_NotICustomMarshaler_ThrowsApplicationException();
                 Parameter_OpenGenericICustomMarshaler_ThrowsTypeLoadException();
                 Parameter_GetInstanceMethodDoesntExist_ThrowsApplicationException();