diff --git a/include/__config b/include/__config
index dcddae8d..6b8475b7 100644
--- a/include/__config
+++ b/include/__config
@@ -278,7 +278,7 @@ typedef __char32_t char32_t;
 #define _LIBCPP_HAS_NO_CONSTEXPR
 #endif
 
-#if defined(__FreeBSD__) && (__ISO_C_VISIBLE >= 2011 || __cplusplus >= 201103L)
+#if ( defined(__FreeBSD__) || defined(__linux__) ) && (__ISO_C_VISIBLE >= 2011 || __cplusplus >= 201103L)
 #define _LIBCPP_HAS_QUICK_EXIT
 #define _LIBCPP_HAS_C11_FEATURES
 #endif