diff --git a/test/std/utilities/meta/meta.unary/meta.unary.prop/is_constructible.pass.cpp b/test/std/utilities/meta/meta.unary/meta.unary.prop/is_constructible.pass.cpp
index f6ae40153..9d2ec5ede 100644
--- a/test/std/utilities/meta/meta.unary/meta.unary.prop/is_constructible.pass.cpp
+++ b/test/std/utilities/meta/meta.unary/meta.unary.prop/is_constructible.pass.cpp
@@ -251,6 +251,7 @@ int main()
     LIBCPP_STATIC_ASSERT(
         clang_disallows_valid_static_cast_bug !=
         std::__libcpp_is_constructible<int&&, ExplicitTo<int&&>>::value, "");
+    ((void)clang_disallows_valid_static_cast_bug); // Prevent unused warning
 #else
     static_assert(clang_disallows_valid_static_cast_bug == false, "");
     LIBCPP_STATIC_ASSERT(std::__libcpp_is_constructible<int&&, ExplicitTo<int&&>>::value, "");