diff --git a/lib/strerror.c b/lib/strerror.c
index faa750856..c730670c9 100644
--- a/lib/strerror.c
+++ b/lib/strerror.c
@@ -18,6 +18,7 @@
  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  * KIND, either express or implied.
  *
+ * $Id$
  ***************************************************************************/
 
 #include "setup.h"