diff --git a/SC2018.md b/SC2018.md
index a613a14..b072875 100644
--- a/SC2018.md
+++ b/SC2018.md
@@ -1,4 +1,4 @@
-## Use '[:lower:]' to support accents and foreign alphabets.
+## Use `[:lower:]` to support accents and foreign alphabets.
 
 ### Problematic code: