diff --git a/SC3009.md b/SC3009.md
index 7748c96..cf1ce1e 100644
--- a/SC3009.md
+++ b/SC3009.md
@@ -2,7 +2,7 @@
 
 ### Problematic code:
 
-```
+```sh
 #!/bin/sh
 
 for i in {1..5}; do ...