--- a/guid.cc
+++ b/guid.cc
@@ -141,7 +141,7 @@ void GUIDData::Zero(void) {
 void GUIDData::Randomize(void) {
    int i, uuidGenerated = 0;

-#ifdef _UUID_UUID_H
+#if defined (_UUID_UUID_H) || defined (_UL_LIBUUID_UUID_H)
    uuid_generate(uuidData);
    ReverseBytes(&uuidData[0], 4);
    ReverseBytes(&uuidData[4], 2);