diff --git a/README.md b/README.md
index 52e4bd33570c2ae3d90d34b70840c4669a39088b..84e0af17d0feed49ad99964e683d4fcf29751a7f 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@ Initially cloned from: https://git.fs.lmu.de/roots/mailman2sympa
 This setup is used to migrate mailman to sympa.
 
 Execute for each mailinglist the command:
-```
+```sh
 export MMPW='<your mailman2 list admin password>'
 mm2sympa.sh LIST@lists.DOMAIN
 ```
@@ -23,7 +23,7 @@ in the domain).
 
 If you want to have the new list with a different name (or domain) you
 can specify the new name as optional second parameter:
-```
+```sh
 mm2sympa.sh MMLIST@MMDOMAIN SYMPALIST@SYMPADOMAIN
 ```