diff --git a/src/Umbraco.Web.UI.Client/src/backoffice/shared/components/extension-slot/extension-slot.element.ts b/src/Umbraco.Web.UI.Client/src/backoffice/shared/components/extension-slot/extension-slot.element.ts
index eec5648e04..db97e5a9a2 100644
--- a/src/Umbraco.Web.UI.Client/src/backoffice/shared/components/extension-slot/extension-slot.element.ts
+++ b/src/Umbraco.Web.UI.Client/src/backoffice/shared/components/extension-slot/extension-slot.element.ts
@@ -38,8 +38,8 @@ export class UmbExtensionSlotElement extends UmbLitElement {
 	public defaultElement = '';
 
 	@property()
-	public renderMethod: (manifest: InitializedExtension) => TemplateResult<1 | 2> | HTMLElement | null = (manifest) =>
-		manifest.component;
+	public renderMethod: (extension: InitializedExtension) => TemplateResult<1 | 2> | HTMLElement | null = (extension) =>
+		extension.component;
 
 	connectedCallback(): void {
 		super.connectedCallback();