diff --git a/README.md b/README.md
index 9a6178c..78036d1 100644
--- a/README.md
+++ b/README.md
@@ -1229,7 +1229,7 @@ who -b
 
 ###### Detect a user sudo-su'd into the current shell
 
-```
+```bash
 [[ $(who -m | awk '{ print $1 }') == $(whoami) ]] || echo "You are su-ed to $(whoami)"
 ```