diff --git a/src/thread/WindowsFuture.hxx b/src/thread/WindowsFuture.hxx
index f5d304a1e..e9082a63c 100644
--- a/src/thread/WindowsFuture.hxx
+++ b/src/thread/WindowsFuture.hxx
@@ -22,7 +22,7 @@
 
 #include "CriticalSection.hxx"
 #include "WindowsCond.hxx"
-#include <atomic>
+
 #include <memory>
 #include <variant>