From 6f41cca9189129fd6df8c82bff532693dcfe52c3 Mon Sep 17 00:00:00 2001
From: Henry Fredrick Schreiner <henry.fredrick.schreiner@cern.ch>
Date: Wed, 13 Jun 2018 15:41:31 +0200
Subject: [PATCH] Simpler check for optional

---
 include/CLI/Optional.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/CLI/Optional.hpp b/include/CLI/Optional.hpp
index a4a03920..faaee366 100644
--- a/include/CLI/Optional.hpp
+++ b/include/CLI/Optional.hpp
@@ -11,7 +11,7 @@
 #ifdef __has_include
 
 #if defined(CLI11_CPP17) && __has_include(<optional>) && \
-    defined(__cpp_lib_optional) && !defined(CLI11_STD_OPTIONAL)
+     !defined(CLI11_STD_OPTIONAL)
 #define CLI11_STD_OPTIONAL 1
 #endif