diff --git a/SC2157.md b/SC2157.md
index c317db2..b23fcfc 100644
--- a/SC2157.md
+++ b/SC2157.md
@@ -1,4 +1,4 @@
-## Argument to implicit -n is always true due to literal strings.
+## Argument to implicit `-n` is always true due to literal strings.
 (Or: Argument to -z is always false due to literal strings. )
 
 ### Problematic code: