diff --git a/SC3024.md b/SC3024.md
index e28d0ed..62a1757 100644
--- a/SC3024.md
+++ b/SC3024.md
@@ -1,4 +1,4 @@
-## In POSIX sh, += is undefined.
+## In POSIX sh, `+=` is undefined.
 
 (or "In dash, ... is not supported." when using `dash`)