diff --git a/doc/README.modern_cpp.md b/doc/README.modern_cpp.md
index f8e7e67cca..0d367aa2d4 100644
--- a/doc/README.modern_cpp.md
+++ b/doc/README.modern_cpp.md
@@ -1,28 +1,11 @@
 # Modern C++ features
 
-We define here as "modern C++" features the ones introduced since C++11. These features should be used in a "controlled" form in Firebird code, as not all compilers fully support them.
+We define here as "modern C++" features the ones introduced since C++17. These features should be used in a "controlled" form in Firebird code, as not all compilers fully support them.
 
-Only ones mentioned in this document could be used, but as necessities appears, discussion should be started in the devel list.
+Only ones mentioned in this document could be used, but as necessities appears, discussion should be started in the devel list or pull requests.
 
 ## Allowed features
 
-### C++11
+### C++17
 
-- auto [v0.9](http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n1984.pdf), [v1.0](http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2546.htm)
-- lambda expressions [v0.9](http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2550.pdf), [v1.0](http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2658.pdf), [v1.1](http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2009/n2927.pdf)
-- [nullptr](http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2431.pdf)
-- [range-based for loop](http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2009/n2930.html)
-- [initializer lists](http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2672.htm)
-- [non-static data member initializers](http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2756.htm)
-- override [v0.8](http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2009/n2928.htm), [v0.9](http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2010/n3206.htm), [v1.0](http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2011/n3272.htm)
-- [static_assert](http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2004/n1720.html)
-- [polymorphic function wrappers](http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2002/n1402.html)
-- [function object binders](http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2003/n1455.htm)
-- [function template mem_fn](http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2003/n1432.htm)
-- [rvalue references](http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n2027.html)
-- [strongly-typed enum](http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2347.pdf)
-- [atomic types and operations](http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2427.html)
-- [decltype](https://en.cppreference.com/w/cpp/language/decltype)
-- [std::is_convertible](https://en.cppreference.com/w/cpp/types/is_convertible)
-- [final specifier](https://en.cppreference.com/w/cpp/language/final)
-- [constexpr](https://en.cppreference.com/w/cpp/language/constexpr)
+- [if with init-statement](https://en.cppreference.com/w/cpp/language/if)