diff --git a/platform/script-debugger/backend/src/org/jetbrains/rpc/NestedCommandCallbackWithResponse.java b/platform/script-debugger/backend/src/org/jetbrains/rpc/NestedCommandCallbackWithResponse.java
index c93e635973e6..ee5640ce91d9 100644
--- a/platform/script-debugger/backend/src/org/jetbrains/rpc/NestedCommandCallbackWithResponse.java
+++ b/platform/script-debugger/backend/src/org/jetbrains/rpc/NestedCommandCallbackWithResponse.java
@@ -7,8 +7,8 @@ final class NestedCommandCallbackWithResponse<SUCCESS_RESPONSE, RESULT, MAIN_RES
   extends CommandCallbackWithResponseBase<SUCCESS_RESPONSE, AsyncResult<MAIN_RESULT>, RESULT, ERROR_DETAILS> {
   private final PairConsumer<RESULT, AsyncResult<MAIN_RESULT>> consumer;
 
-  public NestedCommandCallbackWithResponse(AsyncResult<MAIN_RESULT> mainAsyncResult, String methodName, PairConsumer<RESULT, AsyncResult<MAIN_RESULT>> consumer) {
-    super(mainAsyncResult, methodName, null);
+  public NestedCommandCallbackWithResponse(AsyncResult<MAIN_RESULT> result, String methodName, PairConsumer<RESULT, AsyncResult<MAIN_RESULT>> consumer) {
+    super(result, methodName, null);
 
     this.consumer = consumer;
   }
diff --git a/platform/script-debugger/backend/src/org/jetbrains/rpc/ResultReader.java b/platform/script-debugger/backend/src/org/jetbrains/rpc/ResultReader.java
index 439e30da7fa8..4bb055c754d2 100644
--- a/platform/script-debugger/backend/src/org/jetbrains/rpc/ResultReader.java
+++ b/platform/script-debugger/backend/src/org/jetbrains/rpc/ResultReader.java
@@ -1,5 +1,7 @@
 package org.jetbrains.rpc;
 
+import org.jetbrains.annotations.NotNull;
+
 public interface ResultReader<RESPONSE> {
-  <RESULT> RESULT readResult(String readMethodName, RESPONSE successResponse);
+  <RESULT> RESULT readResult(@NotNull String readMethodName, @NotNull RESPONSE successResponse);
 }
\ No newline at end of file