diff --git a/src/Umbraco.Web.UI.Client/src/core/observable-api/unique-object-behavior-subject.test.ts b/src/Umbraco.Web.UI.Client/src/core/observable-api/unique-object-behavior-subject.test.ts
index 8ad4d4b360..9945579b93 100644
--- a/src/Umbraco.Web.UI.Client/src/core/observable-api/unique-object-behavior-subject.test.ts
+++ b/src/Umbraco.Web.UI.Client/src/core/observable-api/unique-object-behavior-subject.test.ts
@@ -44,8 +44,8 @@ describe('UniqueObjectBehaviorSubject', () => {
 			}
 		});
 
-		subject.append({key: 'change_this_first_should_not_trigger_update'});
-		subject.append({another: 'myNewValue'});
+		subject.update({key: 'change_this_first_should_not_trigger_update'});
+		subject.update({another: 'myNewValue'});
 
 	});
 
diff --git a/src/Umbraco.Web.UI.Client/src/core/observable-api/unique-object-behavior-subject.ts b/src/Umbraco.Web.UI.Client/src/core/observable-api/unique-object-behavior-subject.ts
index 9d3f1cd965..0c2deed7d8 100644
--- a/src/Umbraco.Web.UI.Client/src/core/observable-api/unique-object-behavior-subject.ts
+++ b/src/Umbraco.Web.UI.Client/src/core/observable-api/unique-object-behavior-subject.ts
@@ -20,7 +20,7 @@ export class UniqueObjectBehaviorSubject<T> extends UniqueBehaviorSubject<T> {
 	 * const mySubject = new UniqueObjectBehaviorSubject(data)
 	 * mySubject.append({value: 'myNewValue'})
 	 */
-	append(partialData: Partial<T>) {
+	update(partialData: Partial<T>) {
 		this.next({ ...this.getValue(), ...partialData });
 	}
 }