diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index bc491a255..1ed275aa7 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,7 @@
+2003-11-30  Corinna Vinschen  <corinna@vinschen.de>
+
+	* flock.cc: Renamed from flock.c.
+
 2003-11-29  Christopher Faylor  <cgf@redhat.com>
 
 	* pinfo.h: Remove global_sigs declaration.
diff --git a/winsup/cygwin/flock.c b/winsup/cygwin/flock.cc
similarity index 100%
rename from winsup/cygwin/flock.c
rename to winsup/cygwin/flock.cc