diff --git a/platform/platform-impl/src/com/intellij/util/io/socketConnection/SocketConnectionListener.java b/platform/platform-impl/src/com/intellij/util/io/socketConnection/SocketConnectionListener.java
index 74ad0c81906f..ae7ae613e007 100644
--- a/platform/platform-impl/src/com/intellij/util/io/socketConnection/SocketConnectionListener.java
+++ b/platform/platform-impl/src/com/intellij/util/io/socketConnection/SocketConnectionListener.java
@@ -1,10 +1,12 @@
 package com.intellij.util.io.socketConnection;
 
+import org.jetbrains.annotations.NotNull;
+
 import java.util.EventListener;
 
 /**
  * @author nik
  */
 public interface SocketConnectionListener extends EventListener {
-  void statusChanged(ConnectionStatus status);
+  void statusChanged(@NotNull ConnectionStatus status);
 }
\ No newline at end of file