diff --git a/src/os/windows/win32.cpp b/src/os/windows/win32.cpp
index 9978497257..de1697107d 100644
--- a/src/os/windows/win32.cpp
+++ b/src/os/windows/win32.cpp
@@ -20,6 +20,7 @@
 #include <shlobj.h> /* SHGetFolderPath */
 #include <shellapi.h>
 #include <winnls.h>
+#include <io.h>
 #include "win32.h"
 #include "../../fios.h"
 #include "../../core/alloc_func.hpp"