diff --git a/src/xspice/icm/analog/delay/ifspec.ifs b/src/xspice/icm/analog/delay/ifspec.ifs
index e27d9ac9b..abe19354f 100644
--- a/src/xspice/icm/analog/delay/ifspec.ifs
+++ b/src/xspice/icm/analog/delay/ifspec.ifs
@@ -2,14 +2,15 @@
 ================================================================================
 
 -------------------------------------------------------------------------
- Copyright 2011 Thomas Sailer
+ Copyright 2021
+ The ngspice team
  3 - Clause BSD license
  (see COPYING or https://opensource.org/licenses/BSD-3-Clause)
 -------------------------------------------------------------------------
 
 AUTHORS
 
-     19 May 2011     Thomas Sailer
+    12 June 2021     Holger Vogt
 
 
 SUMMARY