diff --git a/docs/learn/concepts/queries.md b/docs/learn/concepts/queries.md
index 38bd20a..69b037e 100644
--- a/docs/learn/concepts/queries.md
+++ b/docs/learn/concepts/queries.md
@@ -1,6 +1,6 @@
 # Queries
 
-## Introductiuon
+## Introduction
 
 Queries enable games to quickly find entities that satifies provided conditions.
 
diff --git a/jecs.d.ts b/jecs.d.ts
index eed8b79..7e53388 100644
--- a/jecs.d.ts
+++ b/jecs.d.ts
@@ -258,7 +258,7 @@ export function pair_second<P, O>(world: World, p: Pair<P, O>): Entity<O>;
 
 export declare const OnAdd: Entity<(e: Entity) => void>;
 export declare const OnRemove: Entity<(e: Entity) => void>;
-export declare const OnSet: Entity<(e: Entity, value: unknown) => void>;
+export declare const OnChange: Entity<(e: Entity, value: unknown) => void>;
 export declare const ChildOf: Tag;
 export declare const Wildcard: Entity;
 export declare const w: Entity;