diff --git a/nbase/getopt.c b/nbase/getopt.c
index e4b2af1bc..381743fca 100644
--- a/nbase/getopt.c
+++ b/nbase/getopt.c
@@ -23,6 +23,8 @@
  *  DEALINGS IN THE SOFTWARE.
  */
 
+/* $Id$ */
+
 #include <sys/types.h>
 #include <stdlib.h>
 #include <stdio.h>
diff --git a/nbase/getopt.h b/nbase/getopt.h
index 296a0d9e9..18c2ed011 100644
--- a/nbase/getopt.h
+++ b/nbase/getopt.h
@@ -23,6 +23,8 @@
  *  DEALINGS IN THE SOFTWARE.
  */
 
+/* $Id$ */
+
 #ifndef MY_GETOPT_H_INCLUDED
 #define MY_GETOPT_H_INCLUDED
 
diff --git a/nbase/nbase_addrset.c b/nbase/nbase_addrset.c
index dc4d0b853..058aa5d27 100644
--- a/nbase/nbase_addrset.c
+++ b/nbase/nbase_addrset.c
@@ -88,6 +88,8 @@
  *                                                                         *
  ***************************************************************************/
 
+/* $Id$ */
+
 /* The code in this file has tests in the file ncat/tests/test-addrset.sh. Run that
    program after making any big changes. Also, please add tests for any new
    features. */
diff --git a/nbase/nbase_addrset.h b/nbase/nbase_addrset.h
index eb889aeab..9abb887f6 100644
--- a/nbase/nbase_addrset.h
+++ b/nbase/nbase_addrset.h
@@ -88,6 +88,7 @@
  *                                                                         *
  ***************************************************************************/
 
+/* $Id$ */
 
 #ifndef _NBASE_ADDRSET_H
 #define _NBASE_ADDRSET_H