diff --git a/src/pugixml.hpp b/src/pugixml.hpp
index 7704a9a..f3b78a7 100644
--- a/src/pugixml.hpp
+++ b/src/pugixml.hpp
@@ -55,8 +55,8 @@
       (defined(_MSVC_LANG) && (_MSVC_LANG > 201703L))))
 #  ifdef PUGI_CXX_STD
 #    undef PUGI_CXX_STD
+#  endif
 #    define PUGI_CXX_STD 20
-#  endif // C++20 features macro
 #endif   // C++20 features check
 
 #if !defined(PUGI_CXX_STD)