diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index 260f469fe..49d5dfc7a 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,7 @@
+2015-03-23  Corinna Vinschen  <corinna@vinschen.de>
+
+	* include/cygwin/_types.h: Drop unused file.
+
 2015-03-19  Corinna Vinschen  <corinna@vinschen.de>
 
 	* sec_acl.cc (get_posix_access): Handle multiple ACEs for the
diff --git a/winsup/cygwin/include/cygwin/_types.h b/winsup/cygwin/include/cygwin/_types.h
deleted file mode 100644
index b96267622..000000000
--- a/winsup/cygwin/include/cygwin/_types.h
+++ /dev/null
@@ -1,16 +0,0 @@
-/* cygwin/_types.h
-
-   Copyright 2004 Red Hat, Inc.
-
-This file is part of Cygwin.
-
-This software is a copyrighted work licensed under the terms of the
-Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
-details. */
-
-#ifndef _CYGWIN__TYPES_H
-#define _CYGWIN__TYPES_H
-
-typedef void *_flock_t;
-
-#endif	/* _CYGWIN__TYPES_H */