diff --git a/gnu/packages/xiph.scm b/gnu/packages/xiph.scm
index 3e4d6687ea..bc2294e58c 100644
--- a/gnu/packages/xiph.scm
+++ b/gnu/packages/xiph.scm
@@ -320,7 +320,7 @@ (define opus-tools
     (source (origin
               (method url-fetch)
               (uri (string-append
-                    "ftp://ftp.mozilla.org/pub/mozilla.org/opus/opus-tools-"
+                    "http://downloads.xiph.org/releases/opus/opus-tools-"
                     version ".tar.gz"))
               (sha256
                (base32