diff --git a/platform/script-debugger/backend/src/org/jetbrains/rpc/CommandSenderBase.kt b/platform/script-debugger/backend/src/org/jetbrains/rpc/CommandSenderBase.kt
index 8b6525e710d0..17a8bbf62d57 100644
--- a/platform/script-debugger/backend/src/org/jetbrains/rpc/CommandSenderBase.kt
+++ b/platform/script-debugger/backend/src/org/jetbrains/rpc/CommandSenderBase.kt
@@ -28,7 +28,7 @@ abstract class CommandSenderBase<SUCCESS_RESPONSE> {
     return callback
   }
 
-  protected class RequestPromise<SUCCESS_RESPONSE, RESULT>(private val methodName: String?) : AsyncPromise<RESULT>(), RequestCallback<SUCCESS_RESPONSE> {
+  class RequestPromise<SUCCESS_RESPONSE, RESULT>(private val methodName: String?) : AsyncPromise<RESULT>(), RequestCallback<SUCCESS_RESPONSE> {
     override fun onSuccess(response: SUCCESS_RESPONSE?, resultReader: ResultReader<SUCCESS_RESPONSE>?) {
       try {
         if (resultReader == null || response == null) {