diff --git a/mirai-core/src/androidMain/kotlin/net/mamoe/mirai/network/BotSession.kt b/mirai-core/src/androidMain/kotlin/net/mamoe/mirai/network/BotSession.kt
index 6435d38d3..6b9513b18 100644
--- a/mirai-core/src/androidMain/kotlin/net/mamoe/mirai/network/BotSession.kt
+++ b/mirai-core/src/androidMain/kotlin/net/mamoe/mirai/network/BotSession.kt
@@ -20,7 +20,7 @@ import java.io.InputStream
  * @author Him188moe
  */
 @UseExperimental(MiraiInternalAPI::class)
-actual class BotSession actual constructor(
+actual class BotSession internal actual constructor(
     bot: Bot,
     sessionKey: SessionKey,
     socket: DataPacketSocketAdapter,
diff --git a/mirai-core/src/jvmMain/kotlin/net/mamoe/mirai/network/BotSessionJvm.kt b/mirai-core/src/jvmMain/kotlin/net/mamoe/mirai/network/BotSessionJvm.kt
index 7277f4955..d775b216e 100644
--- a/mirai-core/src/jvmMain/kotlin/net/mamoe/mirai/network/BotSessionJvm.kt
+++ b/mirai-core/src/jvmMain/kotlin/net/mamoe/mirai/network/BotSessionJvm.kt
@@ -23,7 +23,7 @@ import javax.imageio.ImageIO
  */
 @UseExperimental(MiraiInternalAPI::class)
 @Suppress("unused")
-actual class BotSession actual constructor(
+actual class BotSession internal actual constructor(
     bot: Bot,
     sessionKey: SessionKey,
     socket: DataPacketSocketAdapter,