diff --git a/libcxx/include/__mutex_base b/libcxx/include/__mutex_base
index 6a2b53b0632d..402a52d945e1 100644
--- a/libcxx/include/__mutex_base
+++ b/libcxx/include/__mutex_base
@@ -82,9 +82,9 @@ extern const adopt_lock_t  adopt_lock;
 
 #else
 
-_LIBCPP_INLINE_VAR constexpr defer_lock_t  defer_lock  = defer_lock_t();
-_LIBCPP_INLINE_VAR constexpr try_to_lock_t try_to_lock = try_to_lock_t();
-_LIBCPP_INLINE_VAR constexpr adopt_lock_t  adopt_lock  = adopt_lock_t();
+/* _LIBCPP_INLINE_VAR */ constexpr defer_lock_t  defer_lock  = defer_lock_t();
+/* _LIBCPP_INLINE_VAR */ constexpr try_to_lock_t try_to_lock = try_to_lock_t();
+/* _LIBCPP_INLINE_VAR */ constexpr adopt_lock_t  adopt_lock  = adopt_lock_t();
 
 #endif