diff --git a/contrib/libc++/include/__config b/contrib/libc++/include/__config
index aa8bc4482c5e..a8c3498b0a38 100644
--- a/contrib/libc++/include/__config
+++ b/contrib/libc++/include/__config
@@ -567,7 +567,7 @@ template <unsigned> struct __static_assert_check {};
 #define _LIBCPP_WCTYPE_IS_MASK
 #endif
 
-#if defined(__APPLE__)
+#if defined(__APPLE__) || defined(__FreeBSD__)
 #ifndef _LIBCPP_TRIVIAL_PAIR_COPY_CTOR
 #  define _LIBCPP_TRIVIAL_PAIR_COPY_CTOR 0
 #endif