diff --git a/platform/platform-impl/src/com/intellij/openapi/vcs/impl/FileStatusManagerImpl.java b/platform/platform-impl/src/com/intellij/openapi/vcs/impl/FileStatusManagerImpl.java
index 63afdb8941b4..789a97b5e969 100644
--- a/platform/platform-impl/src/com/intellij/openapi/vcs/impl/FileStatusManagerImpl.java
+++ b/platform/platform-impl/src/com/intellij/openapi/vcs/impl/FileStatusManagerImpl.java
@@ -114,7 +114,7 @@ public class FileStatusManagerImpl extends FileStatusManager implements ProjectC
 
   public void initComponent() { }
 
-  public void addFileStatusListener(FileStatusListener listener) {
+  public void addFileStatusListener(@NotNull FileStatusListener listener) {
     myListeners.add(listener);
   }