diff --git a/mirai-core/src/main/java/net/mamoe/mirai/network/packet/server/login/ServerLoginResponseVerificationCodePacket.kt b/mirai-core/src/main/java/net/mamoe/mirai/network/packet/server/login/ServerLoginResponseVerificationCodePacket.kt
index 795ffa82c..00d4b46aa 100644
--- a/mirai-core/src/main/java/net/mamoe/mirai/network/packet/server/login/ServerLoginResponseVerificationCodePacket.kt
+++ b/mirai-core/src/main/java/net/mamoe/mirai/network/packet/server/login/ServerLoginResponseVerificationCodePacket.kt
@@ -1,8 +1,9 @@
 package net.mamoe.mirai.network.packet.server.login
 
 import net.mamoe.mirai.network.packet.server.ServerPacket
+import net.mamoe.mirai.network.packet.server.dataInputStream
 import net.mamoe.mirai.network.packet.server.goto
-import net.mamoe.mirai.network.packet.server.readVarString
+import net.mamoe.mirai.util.TEACryptor
 import net.mamoe.mirai.util.toHexString
 import java.io.DataInputStream
 
@@ -30,7 +31,7 @@ class ServerLoginResponseVerificationCodePacket(input: DataInputStream, val pack
         this.input.skip(1)
 
         val b = this.input.readByte()
-        System.out.println(b.toHexString())
+        println(b.toHexString())
 
         this.token00BA = this.input.goto(packetLength - 60).readNBytes(40)
     }
@@ -43,6 +44,7 @@ class ServerLoginResponseVerificationCodePacketEncrypted(input: DataInputStream)
 
     fun decrypt(): ServerLoginResponseVerificationCodePacket {
         this.input goto 14
-        return ServerLoginResponseVerificationCodePacket(TEACryptor.CRYPTOR_SHARE_KEY.decrypt(this.input.readAllBytes().let { it.copyOfRange(0, it.size - 1) }).dataInputStream())
+        val data = TEACryptor.CRYPTOR_SHARE_KEY.decrypt(this.input.readAllBytes().let { it.copyOfRange(0, it.size - 1) });
+        return ServerLoginResponseVerificationCodePacket(data.dataInputStream(), data.size)
     }
 }
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diff --git a/mirai-core/src/test/java/PacketTest.kt b/mirai-core/src/test/java/PacketTest.kt
index 4cbea17b4..76fdede8d 100644
--- a/mirai-core/src/test/java/PacketTest.kt
+++ b/mirai-core/src/test/java/PacketTest.kt
@@ -1,12 +1,9 @@
-import net.mamoe.mirai.network.packet.server.login.ServerLoginResponseSuccessPacket
 import net.mamoe.mirai.network.packet.server.login.ServerLoginResponseVerificationCodePacket
 import net.mamoe.mirai.util.hexToBytes
 import net.mamoe.mirai.util.toHexString
-import java.io.ByteArrayInputStream
 import java.io.DataInputStream
 import java.io.File
-import javax.imageio.ImageIO
-import javax.imageio.stream.ImageInputStream
+import java.io.FileOutputStream
 
 @ExperimentalUnsignedTypes
 fun main(){
@@ -40,17 +37,10 @@ fun main(){
     val s = DataInputStream(data.hexToBytes().inputStream())
     val packet =  ServerLoginResponseVerificationCodePacket(s,(data.length+1)/3)
     packet.decode()
-    System.out.println(packet.token00BA.toUByteArray().toHexString(" "))
-    System.out.println(packet.verifyCode.toUByteArray().toHexString(" "))
-    System.out.println(packet.verifyCodeLength)
-
-    val f = File(System.getProperty("user.dir") + "/test.jpg")
-    f.createNewFile()
-    val io = ImageIO.createImageInputStream(ByteArrayInputStream(packet.verifyCode))
-    try {
-        ImageIO.write(Render, "jpg", f)
-    }catch (e: Exception){
-        e.printStackTrace()
-    }
+    println(packet.token00BA.toUByteArray().toHexString(" "))
+    println(packet.verifyCode.toUByteArray().toHexString(" "))
+    println(packet.verifyCodeLength)
 
+    File("C:\\Users\\Him18\\Desktop\\5.png").createNewFile()
+    s.transferTo(FileOutputStream("C:\\Users\\Him18\\Desktop\\5.png"))
 }
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