diff --git a/guix/download.scm b/guix/download.scm
index bf818e3cdf..ae381ee7ab 100644
--- a/guix/download.scm
+++ b/guix/download.scm
@@ -115,7 +115,7 @@ (define %mirrors
        "http://jaist.dl.sourceforge.net/project/"
        "http://kent.dl.sourceforge.net/project/"
        "http://liquidtelecom.dl.sourceforge.net/project/"
-       "http://nbtelecom.dl.sourceforge.net/project/"
+       ;; "http://nbtelecom.dl.sourceforge.net/project/"  ;never returns 404s
        "http://nchc.dl.sourceforge.net/project/"
        "http://ncu.dl.sourceforge.net/project/"
        "http://netcologne.dl.sourceforge.net/project/"