diff --git a/group_vars/all/main.yml b/group_vars/all/main.yml
index b4fd1db..8669ea5 100644
--- a/group_vars/all/main.yml
+++ b/group_vars/all/main.yml
@@ -106,7 +106,7 @@ copy_plain_files_sysctl:
 
 apt_manage_sources_list: true
 
-apt_src_enable: true
+apt_src_enable: false
 apt_backports_enable: true
 
 apt_debian_mirror: http://ftp.de.debian.org/debian/