diff --git a/lib/roken/cloexec.c b/lib/roken/cloexec.c
index 0f2ef2f65..2d1fe033f 100644
--- a/lib/roken/cloexec.c
+++ b/lib/roken/cloexec.c
@@ -60,7 +60,7 @@ rk_cloexec_file(FILE *f)
 void ROKEN_LIB_FUNCTION
 rk_cloexec_dir(DIR * d)
 {
-#ifdef HAVE_DIRFD
+#ifndef _WIN32
     rk_cloexec(dirfd(d));
 #endif
 }