diff --git a/mirai-core/src/main/java/net/mamoe/mirai/network/protocol/tim/packet/ClientPacket.kt b/mirai-core/src/main/java/net/mamoe/mirai/network/protocol/tim/packet/ClientPacket.kt
index a142d97b7..4113485f5 100644
--- a/mirai-core/src/main/java/net/mamoe/mirai/network/protocol/tim/packet/ClientPacket.kt
+++ b/mirai-core/src/main/java/net/mamoe/mirai/network/protocol/tim/packet/ClientPacket.kt
@@ -113,7 +113,7 @@ fun DataOutputStream.encryptAndWrite(byteArray: ByteArray, key: ByteArray) {
 }
 
 fun DataOutputStream.encryptAndWrite(key: ByteArray, encoder: ByteArrayDataOutputStream.() -> Unit) {
-    this.write(TEA.encrypt(ByteArrayDataOutputStream().also(encoder).toByteArray(), key))
+    this.write(TEA.encrypt(ByteArrayDataOutputStream().apply(encoder).use { it.toByteArray() }, key))
 }
 
 fun DataOutputStream.encryptAndWrite(keyHex: String, encoder: ByteArrayDataOutputStream.() -> Unit) {