diff --git a/examples/CMakeLists.txt b/examples/CMakeLists.txt
index d9672bd..a5bf92e 100644
--- a/examples/CMakeLists.txt
+++ b/examples/CMakeLists.txt
@@ -1,7 +1,6 @@
 cmake_minimum_required(VERSION 3.1)
 project(example)
 
-set(ASIO_STANDALONE 1)
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pthread -std=c++11")
 
 SET(ENABLE_SSL OFF)