diff --git a/src/Umbraco.Web.UI.Client/src/packages/core/modal/modal-manager.context.ts b/src/Umbraco.Web.UI.Client/src/packages/core/modal/modal-manager.context.ts
index a557c2898f..2927549350 100644
--- a/src/Umbraco.Web.UI.Client/src/packages/core/modal/modal-manager.context.ts
+++ b/src/Umbraco.Web.UI.Client/src/packages/core/modal/modal-manager.context.ts
@@ -33,7 +33,7 @@ export class UmbModalManagerContext {
 	 */
 	public open<
 		ModalData extends object = object,
-		ModalValue = unknown,
+		ModalValue extends object = object,
 		ModalAliasTypeAsToken extends UmbModalToken = UmbModalToken<ModalData, ModalValue>,
 	>(
 		modalAlias: UmbModalToken<ModalData, ModalValue> | string,