diff --git a/compat/mingw.c b/compat/mingw.c
index 849a72998c..d5159df526 100644
--- a/compat/mingw.c
+++ b/compat/mingw.c
@@ -3228,6 +3228,7 @@ int msc_startup(int argc, wchar_t **w_argv, wchar_t **w_env)
 
 	maybe_redirect_std_handles();
 	adjust_symlink_flags();
+	fsync_object_files = 1;
 
 	/* determine size of argv conversion buffer */
 	maxlen = wcslen(_wpgmptr);