diff --git a/platform/built-in-server/testSrc/BinaryRequestHandlerTest.kt b/platform/built-in-server/testSrc/BinaryRequestHandlerTest.kt
index 97b782f9e680..0659a9c0e9a3 100644
--- a/platform/built-in-server/testSrc/BinaryRequestHandlerTest.kt
+++ b/platform/built-in-server/testSrc/BinaryRequestHandlerTest.kt
@@ -39,7 +39,7 @@ public class BinaryRequestHandlerTest {
         channel.pipeline().addLast(object : Decoder() {
           override fun messageReceived(context: ChannelHandlerContext, input: ByteBuf) {
             val requiredLength = 4 + text.length()
-            val response = readContent(input, context, requiredLength) {(buffer, context) -> buffer.toString(buffer.readerIndex(), requiredLength, CharsetUtil.UTF_8) }
+            val response = readContent(input, context, requiredLength) {(buffer, context, isCumulateBuffer) -> buffer.toString(buffer.readerIndex(), requiredLength, CharsetUtil.UTF_8) }
             if (response != null) {
               result.setDone(response)
             }