diff --git a/thread/flag_std.cpp b/thread/flag_std.cpp
index 32ace946..d1fca292 100644
--- a/thread/flag_std.cpp
+++ b/thread/flag_std.cpp
@@ -2,9 +2,6 @@
 
 #include "../win32/except.hpp"
 
-#include <synchapi.h>
-#include <windows.h>
-
 using cruft::thread::flag;