diff --git a/src/types/Model.ts b/src/types/Model.ts
index 6e12ef2..d7a1f38 100644
--- a/src/types/Model.ts
+++ b/src/types/Model.ts
@@ -22,7 +22,7 @@ export type Response<T> = {
 export type Page<T> = {
 	index: number;
 	size: number;
-	orderMap?: { [key: string]: OrderType };
+	orderMap?: { [K in keyof T]?: OrderType };
 	equalsExample?: T;
 	likesExample?: T;
 }