diff --git a/test/error_code_test.cpp b/test/error_code_test.cpp
index 3703bad..6033576 100644
--- a/test/error_code_test.cpp
+++ b/test/error_code_test.cpp
@@ -20,9 +20,6 @@
 
 #include <boost/test/minimal.hpp>
 #include <boost/system/error_code.hpp>
-#include <boost/system/cygwin_error.hpp>
-#include <boost/system/linux_error.hpp>
-#include <boost/system/windows_error.hpp>
 #include <iostream>
 #include <sstream>
 #include <string>