diff --git a/intermediate/shell/tmux.md b/intermediate/shell/tmux.md
index 91534eceb..a732d1f51 100644
--- a/intermediate/shell/tmux.md
+++ b/intermediate/shell/tmux.md
@@ -68,7 +68,9 @@ $ tmux ls
 
 since we only have one session, we can just run:
 
-`$ tmux attach`
+~~~sh
+$ tmux attach`
+~~~
 
 #### windows