diff --git a/STYLE.md b/STYLE.md
index 9fcfbdf6..414e3d20 100644
--- a/STYLE.md
+++ b/STYLE.md
@@ -25,6 +25,7 @@ isabell.uber.space
 
 -   Document all steps for setup. E.g. [create a database](https://github.com/Uberspace/lab/issues/39) when that's necessary. [Create directories](https://github.com/Uberspace/lab/issues/36) when needed.
 -   When there is a license needed for the software mention it.
+-   Include output of shell commands if there is any.
 -   If there are interactive shell sessions, emphasize the lines that expect input from the user. For example:
 
 ```