diff --git a/SC2020.md b/SC2020.md
index 1e8b7e6..465a152 100644
--- a/SC2020.md
+++ b/SC2020.md
@@ -1,4 +1,4 @@
-# tr replaces sets of chars, not words (mentioned due to duplicates).
+## `tr` replaces sets of chars, not words (mentioned due to duplicates).
 
 ### Problematic code: