diff --git a/platform/script-debugger/protocol/protocol-reader-runtime/src/org/jetbrains/jsonProtocol/OutMessage.kt b/platform/script-debugger/protocol/protocol-reader-runtime/src/org/jetbrains/jsonProtocol/OutMessage.kt
index aceb6b0f35de..ecf15e5bb27f 100644
--- a/platform/script-debugger/protocol/protocol-reader-runtime/src/org/jetbrains/jsonProtocol/OutMessage.kt
+++ b/platform/script-debugger/protocol/protocol-reader-runtime/src/org/jetbrains/jsonProtocol/OutMessage.kt
@@ -12,7 +12,7 @@ import io.netty.buffer.ByteBufUtf8Writer
 import org.jetbrains.io.JsonUtil
 
 open class OutMessage() {
-  val buffer: ByteBuf = ByteBufAllocator.DEFAULT.heapBuffer()
+  val buffer: ByteBuf = ByteBufAllocator.DEFAULT.buffer()
   val writer: JsonWriter = JsonWriter(ByteBufUtf8Writer(buffer))
 
   private var finalized: Boolean = false