diff --git a/docs/sources/alerting/fundamentals/annotation-label/variables-label-annotation.md b/docs/sources/alerting/fundamentals/annotation-label/variables-label-annotation.md
index 7fbef157997..7044712eb47 100644
--- a/docs/sources/alerting/fundamentals/annotation-label/variables-label-annotation.md
+++ b/docs/sources/alerting/fundamentals/annotation-label/variables-label-annotation.md
@@ -315,7 +315,7 @@ The `toUpper` function returns all text in uppercase.
 #### Example
 
 ```
-{{ toLower "Hello, world!" }}
+{{ toUpper "Hello, world!" }}
 ```
 
 ```