diff --git a/HowtoDebian/SourcesList.md b/HowtoDebian/SourcesList.md
index b71a07b0..80dc4a3d 100644
--- a/HowtoDebian/SourcesList.md
+++ b/HowtoDebian/SourcesList.md
@@ -35,12 +35,12 @@ deb http://pub.evolix.net/ stretch/
 
 ## Squeeze
 
-~~
+~~~
 deb http://ftp.debian.org/debian/ jessie main
 deb http://security.debian.org/ jessie/updates main
 deb http://pub.evolix.net/ jessie/
 deb http://deb.freexian.com/extended-lts jessie-lts main
-~~
+~~~
 
 ## Clefs PGP
 
@@ -50,11 +50,11 @@ deb http://deb.freexian.com/extended-lts jessie-lts main
 # cd /etc/apt/trusted.gpg.d
 # wget 'https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x0c016d3bd1195d30105837cc44975278b8612b5d' -O reg.asc
 # chmod 644 reg.asc
-~~
+~~~
 
 ### Clef PGP pour Freexian
 
-~~
+~~~
 # wget https://deb.freexian.com/extended-lts/archive-key.gpg -O /etc/apt/trusted.gpg.d/freexian-archive-extended-lts.gpg
-~~
+~~~