diff --git a/src/Umbraco.Web.UI.Client/src/packages/core/workspace/contexts/saveable-workspace-context-base.ts b/src/Umbraco.Web.UI.Client/src/packages/core/workspace/contexts/saveable-workspace-context-base.ts
index 46cffb5336..021b72f055 100644
--- a/src/Umbraco.Web.UI.Client/src/packages/core/workspace/contexts/saveable-workspace-context-base.ts
+++ b/src/Umbraco.Web.UI.Client/src/packages/core/workspace/contexts/saveable-workspace-context-base.ts
@@ -17,8 +17,6 @@ export abstract class UmbSaveableWorkspaceContextBase<WorkspaceDataModelType>
 	// TODO: We could make a base type for workspace modal data, and use this here: As well as a base for the result, to make sure we always include the unique (instead of the object type)
 	public readonly modalContext?: UmbModalContext<{ preset: object }>;
 
-	abstract readonly unique: Observable<string | null | undefined>;
-
 	#isNew = new UmbBooleanState(undefined);
 	isNew = this.#isNew.asObservable();
 
@@ -66,7 +64,7 @@ export abstract class UmbSaveableWorkspaceContextBase<WorkspaceDataModelType>
 	abstract getEntityType(): string;
 	abstract getData(): WorkspaceDataModelType | undefined;
 	abstract save(): Promise<void>;
-	abstract unique: Observable<string | undefined>;
+	abstract readonly unique: Observable<string | null | undefined>;
 }
 
 /*