diff --git a/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/Bot.kt b/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/Bot.kt
index 17e4b589d..d00de4f3a 100644
--- a/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/Bot.kt
+++ b/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/Bot.kt
@@ -50,7 +50,7 @@ suspend inline fun <B : Bot> B.alsoLogin(): B = also { login() }
  */
 @Suppress("INAPPLICABLE_JVM_NAME")
 @OptIn(MiraiInternalAPI::class, LowLevelAPI::class)
-abstract class Bot : CoroutineScope, LowLevelBotAPIAccessor, BotJavaFriendlyAPI(), Identified {
+abstract class Bot : CoroutineScope, LowLevelBotAPIAccessor, BotJavaFriendlyAPI(), ContactOrBot {
     companion object {
         /**
          * 复制一份此时的 [Bot] 实例列表.
diff --git a/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/contact/Contact.kt b/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/contact/Contact.kt
index d8e2dd40f..b4c98884f 100644
--- a/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/contact/Contact.kt
+++ b/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/contact/Contact.kt
@@ -8,6 +8,7 @@
  */
 
 @file:Suppress("EXPERIMENTAL_API_USAGE", "NOTHING_TO_INLINE", "EXPERIMENTAL_OVERRIDE")
+@file:OptIn(MiraiInternalAPI::class, JavaFriendlyAPI::class)
 
 package net.mamoe.mirai.contact
 
@@ -34,9 +35,8 @@ import kotlin.jvm.JvmSynthetic
  * 联系人. 虽然叫做联系人, 但他的子类有 [QQ], [群成员][Member] 和 [群][Group].
  *
  * @author Him188moe
- */ // 不要删除多平台结构 !!! kotlin bug
-@OptIn(MiraiInternalAPI::class, JavaFriendlyAPI::class)
-abstract class Contact : CoroutineScope, ContactJavaFriendlyAPI(), Identified {
+ */
+abstract class Contact : CoroutineScope, ContactJavaFriendlyAPI(), ContactOrBot {
     /**
      * 这个联系人所属 [Bot].
      */
diff --git a/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/contact/Identified.kt b/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/contact/ContactOrBot.kt
similarity index 61%
rename from mirai-core/src/commonMain/kotlin/net.mamoe.mirai/contact/Identified.kt
rename to mirai-core/src/commonMain/kotlin/net.mamoe.mirai/contact/ContactOrBot.kt
index 93de5cd74..c9ce94d7e 100644
--- a/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/contact/Identified.kt
+++ b/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/contact/ContactOrBot.kt
@@ -20,23 +20,10 @@ import net.mamoe.mirai.utils.SinceMirai
  * @see Contact
  * @see Bot
  */
-@ExperimentalIdentification("classname may change")
 @SinceMirai("0.37.2")
-interface Identified {
+interface ContactOrBot {
     /**
      * QQ 号或群号.
      */
     val id: Long
-}
-
-
-/**
- * 标记使用实验性 [Identified] 接口.
- */
-@Retention(AnnotationRetention.SOURCE)
-@RequiresOptIn(level = RequiresOptIn.Level.WARNING)
-@Target(AnnotationTarget.CLASS, AnnotationTarget.TYPEALIAS, AnnotationTarget.FUNCTION,
-    AnnotationTarget.PROPERTY, AnnotationTarget.FIELD, AnnotationTarget.CONSTRUCTOR)
-annotation class ExperimentalIdentification(
-    val message: String = ""
-)
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/MessageSource.kt b/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/MessageSource.kt
index 14dc797bb..291ca89c6 100644
--- a/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/MessageSource.kt
+++ b/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/message/data/MessageSource.kt
@@ -117,14 +117,14 @@ sealed class OnlineMessageSource : MessageSource() {
      * 即类型必定为 [Bot], [QQ] 或 [Member]
      */
     @ExperimentalIdentification
-    abstract val sender: Identified
+    abstract val sender: ContactOrBot
 
     /**
      * 消息发送目标. 可能为 [机器人][Bot] 或 [好友][QQ] 或 [群][Group].
      * 即类型必定为 [Bot], [QQ] 或 [Group]
      */
     @ExperimentalIdentification
-    abstract val target: Identified
+    abstract val target: ContactOrBot
 
     /**
      * 消息主体. 群消息时为 [Group]. 好友消息时为 [QQ], 临时消息为 [Member]