diff --git a/helpers/make-cdrom-checker b/helpers/make-cdrom-checker
index 7e4751e..e03b612 100644
--- a/helpers/make-cdrom-checker
+++ b/helpers/make-cdrom-checker
@@ -18,10 +18,13 @@
 #
 
 VERSION=1
+EXTERNAL='deb-src http://ftp.debian.org/debian stable main'
+REPOKEY=648ACFD622F3D138
 NETINST=true
 . ./config
 
 replace "Ubuntu" "Trisquel" .
+replace "Debian" "Trisquel" .
 
 changelog "Rebranded and adapted for Trisquel"
 compile