diff --git a/src/core/ngx_buf.c b/src/core/ngx_buf.c
index 16398a6..ca64783 100644
--- a/src/core/ngx_buf.c
+++ b/src/core/ngx_buf.c
@@ -1,4 +1,9 @@
 
+/*
+ * Copyright (C) 2002-2004 Igor Sysoev
+ */
+
+
 #include <ngx_config.h>
 #include <ngx_core.h>