diff --git a/CMakeLists.txt b/CMakeLists.txt
index a3ee2e503..2b53844fd 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -134,6 +134,11 @@ endif()
 
 find_package(Boost ${BOOST_MIN_VERSION} COMPONENTS context coroutine date_time thread system program_options regex REQUIRED)
 
+# Boost.Coroutine2 (the successor of Boost.Coroutine)
+# (1) doesn't even exist in old Boost versions and
+# (2) isn't supported by ASIO, yet.
+add_definitions(-DBOOST_COROUTINES_NO_DEPRECATION_WARNING)
+
 link_directories(${Boost_LIBRARY_DIRS})
 include_directories(${Boost_INCLUDE_DIRS})
 
diff --git a/lib/base/io-engine.hpp b/lib/base/io-engine.hpp
index ada80d1ca..e383b2e42 100644
--- a/lib/base/io-engine.hpp
+++ b/lib/base/io-engine.hpp
@@ -20,13 +20,6 @@
 #ifndef IO_ENGINE_H
 #define IO_ENGINE_H
 
-/**
- * Boost.Coroutine2 (the successor of Boost.Coroutine)
- * (1) doesn't even exist in old Boost versions and
- * (2) isn't supported by ASIO, yet.
- */
-#define BOOST_COROUTINES_NO_DEPRECATION_WARNING 1
-
 #include "base/lazy-init.hpp"
 #include <atomic>
 #include <memory>