diff --git a/examples/makebuildserver.config.py b/examples/makebuildserver.config.py
index 615029b3..f2c846d5 100644
--- a/examples/makebuildserver.config.py
+++ b/examples/makebuildserver.config.py
@@ -13,6 +13,12 @@ baseboxurl = "https://f-droid.org/jessie32.box"
 # or if you have a cached local copy, you can use that first:
 # baseboxurl = ["file:///home/fdroid/fdroidserver/cache/jessie32.box", "https://f-droid.org/jessie32.box"]
 
+# To specify which Debian mirror the build server VM should use, by
+# default it uses http.debian.net, which auto-detects which is the
+# best mirror to use.
+#
+# debian_mirror = 'http://ftp.uk.debian.org/debian/'
+
 # The amount of RAM the build server will have
 memory = 3584
 
diff --git a/makebuildserver b/makebuildserver
index 9695ba2c..4fc9a28d 100755
--- a/makebuildserver
+++ b/makebuildserver
@@ -41,7 +41,7 @@ parser.add_option("-v", "--verbose", action="store_true", default=False,
                   help="Spew out even more information than normal")
 parser.add_option("-c", "--clean", action="store_true", default=False,
                   help="Build from scratch, rather than attempting to update the existing server")
-parser.add_option("--debian-mirror", default="http://ftp.uk.debian.org/debian/",
+parser.add_option("--debian-mirror", default="http://http.debian.net/debian/",
                   help="Use the specified Debian mirror in the box's /etc/apt/sources.list.")
 options, args = parser.parse_args()