diff --git a/packages/reactivity/src/computed.ts b/packages/reactivity/src/computed.ts
index 0fe19191..055a0dcf 100644
--- a/packages/reactivity/src/computed.ts
+++ b/packages/reactivity/src/computed.ts
@@ -5,7 +5,6 @@ import { ReactiveFlags, toRaw } from './reactive'
 
 export interface ComputedRef<T = any> extends WritableComputedRef<T> {
   readonly value: T
-  defer?: (fn: () => void) => void
 }
 
 export interface WritableComputedRef<T> extends Ref<T> {