diff --git a/SC1035.md b/SC1035.md
index a71a8ba..2e7d43b 100644
--- a/SC1035.md
+++ b/SC1035.md
@@ -2,11 +2,14 @@
 
 ### Problematic code:
 
-    if ![-z foo ]; then true; fi
-
+```sh
+if ![-z foo ]; then true; fi
+```
 ### Correct code:
 
-    if ! [ -z foo ]; then true; fi
+```sh
+if ! [ -z foo ]; then true; fi
+```
 
 ### Rationale: