diff --git a/lib/libfetch/fetch.c b/lib/libfetch/fetch.c
--- a/lib/libfetch/fetch.c
+++ b/lib/libfetch/fetch.c
@@ -426,7 +426,7 @@
 				goto ouch;
 			}
 		}
-		if (n < 1 || n > IPPORT_MAX)
+		if (p != q && (n < 1 || n > IPPORT_MAX))
 			goto ouch;
 		u->port = n;
 		p = q;