diff --git a/packages/core/data/observable/index.ts b/packages/core/data/observable/index.ts
index bbe234025..e8fef7978 100644
--- a/packages/core/data/observable/index.ts
+++ b/packages/core/data/observable/index.ts
@@ -219,6 +219,7 @@ export class Observable {
 			list.push({
 				callback,
 				thisArg,
+				once,
 			});
 		}
 	}