diff --git a/SC2251.md b/SC2251.md
index 0be5b47..d651fac 100644
--- a/SC2251.md
+++ b/SC2251.md
@@ -27,8 +27,8 @@ Adding `|| exit ` will instead exit with failure when the command succeeds.
 
 ShellCheck will not detect cases where `$?` is implicitly or explicitly used to check the value afterwards:
 
-```
-set -e;
+```sh
+set -e
 check_success() { [ $? -eq 0 ] || exit 1; }
 ! false; check_success
 ! true; check_success