diff --git a/Python/etc/apt/sources.list/gen.py b/Python/etc/apt/sources.list/gen.py
index 2509053..cc9c6d2 100644
--- a/Python/etc/apt/sources.list/gen.py
+++ b/Python/etc/apt/sources.list/gen.py
@@ -6,7 +6,7 @@ header()
 if has("debian-mirror"):
     mirror = "file:/mirror/"
 else:
-    mirror = "ftp:/mirror.adm.crans.org/"
+    mirror = "ftp://mirror.adm.crans.org/"
 
 def source(args):
     %deb     mirror + args