diff --git a/config.m4 b/config.m4
index eeb1ea1..999f92c 100644
--- a/config.m4
+++ b/config.m4
@@ -1,4 +1,3 @@
-dnl $Id$
 dnl config.m4 for extension gnupg
 AC_CANONICAL_HOST
 case $host_os in