diff --git a/README.md b/README.md
index d685bdabc..e5beca85a 100644
--- a/README.md
+++ b/README.md
@@ -21,6 +21,8 @@ Details-summary sample
 500 ps -a -x -u
 501 touch /opt/LLL/run/ok
 502 LLLSDLaserControl -ok1
+</pre>
+</details>
 
 ## Diff sample
 Simple diff