diff --git a/unittests/CppInterOp/ScopeReflectionTest.cpp b/unittests/CppInterOp/ScopeReflectionTest.cpp
index f6dc8234a..ac7c28925 100644
--- a/unittests/CppInterOp/ScopeReflectionTest.cpp
+++ b/unittests/CppInterOp/ScopeReflectionTest.cpp
@@ -660,10 +660,11 @@ TEST(ScopeReflectionTest, IsSubclass) {
 
 TEST(ScopeReflectionTest, GetBaseClassOffset) {
   std::vector<Decl *> Decls;
+#define UNUSED(x) (void)(x)
 #define Stringify(s) Stringifyx(s)
 #define Stringifyx(...) #__VA_ARGS__
 #define CODE                                                    \
-  class A { int m_a; };                                         \
+  class A { int m_a; void foo(const int i) {UNUSED(i);}};       \
   class B { int m_b; };                                         \
   class C : virtual A, virtual B { int m_c; };                  \
   class D : virtual A, virtual B, public C { int m_d; };        \