diff --git a/docs/hello_nf-core/01_run_demo.md b/docs/hello_nf-core/01_run_demo.md
index a6628c097..e6e15048d 100644
--- a/docs/hello_nf-core/01_run_demo.md
+++ b/docs/hello_nf-core/01_run_demo.md
@@ -278,7 +278,7 @@ This tells us that three processes were run, corresponding to the three tools sh
 Finally, let's have a look at the `demo-results` directory produced by the pipeline.
 
 ```bash
-tree demo-results
+tree -L 2 demo-results
 ```
 
 ```console title="Output"