diff --git a/test/fff_test_cpp.cpp b/test/fff_test_cpp.cpp
index 881b3b9..2c1c65a 100644
--- a/test/fff_test_cpp.cpp
+++ b/test/fff_test_cpp.cpp
@@ -71,7 +71,11 @@ namespace cxx
 // original declaration.
 namespace cxx
 {
+#ifndef TEST_WITH_CALLING_CONVENTIONS
     FAKE_VOID_FUNC(voidfunc1, cxx::int_t);
+#else
+	FAKE_VOID_FUNC(_cdecl, voidfunc1, cxx::int_t);
+#endif
 }
 
 TEST_F(FFFTestSuite, cxx_fake_is_called)