No that's the point, the generation script recognizes that the server issues an HTTP-compliant response (which 301 Moved Permanently is) on port 80 and dumbly g

No that's the point, the generation script recognizes that the server issues an HTTP-compliant response (which 301 Moved Permanently is) on port 80 and dumbly generates that false-positive, not understanding that the only responses on port 80 are to upgrade to HTTPS.