diff --git a/SC2154.md b/SC2154.md
index 9bd3db7..e2e6993 100644
--- a/SC2154.md
+++ b/SC2154.md
@@ -26,7 +26,7 @@ echo "Result: ${mycmd -a myfile}"  # trying to execute commands
 ```sh
 var=name
 n=42
-echo "${var}_$n.jpg"
+echo "${var}_${n}.jpg"
 ```
 
 or