diff --git a/CMakeLists.txt b/CMakeLists.txt
index 561029e..ed73e52 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -23,6 +23,7 @@ endif()
 
 include(CMLibCommon)
 
+#cmlib_set_cxx_standard(11)
 option(MYXLIB_BUILD_EXAMPLES "Build examples" OFF)
 
 # Поиск библиотек с помощью pkgconfig
diff --git a/src/myx/backports/cpp/helpers.hpp b/src/myx/backports/cpp/helpers.hpp
index 3f6b1c0..71d0c56 100644
--- a/src/myx/backports/cpp/helpers.hpp
+++ b/src/myx/backports/cpp/helpers.hpp
@@ -34,7 +34,10 @@ namespace std
 {
 
 template< typename ... Ts > struct make_void { typedef void type; };
+
+#ifndef __cpp_lib_void_t
 template< typename ... Ts > using void_t = typename make_void< Ts... >::type;
+#endif
 
 } // namespace std