diff --git a/tests/xml/fake_libvirt_xml.c b/tests/xml/fake_libvirt_xml.c
index 611924134..c44e5fc13 100644
--- a/tests/xml/fake_libvirt_xml.c
+++ b/tests/xml/fake_libvirt_xml.c
@@ -27,6 +27,10 @@
 
 #include <libvirt/libvirt.h>
 
+#ifndef O_CLOEXEC
+#define O_CLOEXEC 0
+#endif
+
 char *
 virDomainGetXMLDesc (virDomainPtr dom, unsigned int flags)
 {