diff --git a/tasks/ast_codegen/src/markers.rs b/tasks/ast_codegen/src/markers.rs
index 42872a107fca43..b7e6eb2aa9698f 100644
--- a/tasks/ast_codegen/src/markers.rs
+++ b/tasks/ast_codegen/src/markers.rs
@@ -62,6 +62,7 @@ pub struct ScopeMarkers {
     pub enter_before: bool,
 }
 
+/// A struct representing the `#[scope(...)]` attribute.
 #[derive(Debug, Default)]
 pub struct ScopeAttr {
     pub r#if: Option<Expr>,