diff --git a/src/stories/3_Function.stories.mdx b/src/stories/3_Function.stories.mdx
index 26165d6..fb90b1a 100644
--- a/src/stories/3_Function.stories.mdx
+++ b/src/stories/3_Function.stories.mdx
@@ -63,7 +63,7 @@ Compute a single result from a set of input values:
 
 Manipulate and format date values:
 
-**Year**
+**Substring**
 
 <QueryPreview code={`Fn.substring('created_at',1,4);`} />