diff --git a/src/ops/gnulinux/debian.md b/src/ops/gnulinux/debian.md
index f8fe225..5f41e34 100644
--- a/src/ops/gnulinux/debian.md
+++ b/src/ops/gnulinux/debian.md
@@ -33,15 +33,15 @@ If there is anything, check with `dpkg --audit`
 Check
 
 ```shell
-sed s/$OLDSTABLE/$STABLE/g /etc/apt/source.list
+sed s/$OLDSTABLE/$STABLE/g /etc/apt/sources.list
 # for exemple
-sed s/stretch/buster/g /etc/apt/source.list
+sed s/stretch/buster/g /etc/apt/sources.list
 ```
 
 Is it's ok, go
 
 ```shell
-sed -i s/stretch/buster/g /etc/apt/source.list
+sed -i s/stretch/buster/g /etc/apt/sources.list
 ```
 
 Do not forget stuff in source.list.d