diff --git a/scripts/mkwebpage b/scripts/mkwebpage
index 10d170c79..133263dc7 100755
--- a/scripts/mkwebpage
+++ b/scripts/mkwebpage
@@ -11,8 +11,8 @@ set -e
 extract_date () {
     # This strange construct is to speed up things.  Grouping a "s" and a "q"
     # does not work. Anyway we should use awk instead.
-    sed '/^.*\$Id$.*$/q' $1 |
-    sed -n 's!^.*\$Id$!\1-\2-\3 \4!p'
+    sed '/^.*\$\[I\]d:.*\$.*$/q' $1 |
+    sed -n 's!^.*\$\[I\]d: [^ ]\+ [^ ]\+ \([0-9]*\)/\([0-9]*\)/\([0-9]*\) [^ ]\+ \([^ ]\+\).*$!\1-\2-\3 \4!p'
 }
 
 # We have to edit most files