diff --git a/src/spicelib/devices/adms/admst/analogfunction.xml b/src/spicelib/devices/adms/admst/analogfunction.xml
index b5df93530..836128bf7 100644
--- a/src/spicelib/devices/adms/admst/analogfunction.xml
+++ b/src/spicelib/devices/adms/admst/analogfunction.xml
@@ -1092,8 +1092,8 @@ double $(module)_d_$(function) (<admst:join select="variable[input='yes']" separ
 </admst:open>
 <admst:message format="$(module).analogfunction.h created\n"/>
 
-<admst:open file="$(module).analogfunction.cpp">/*
- * $(module).analogfunction.cpp - analog function implementations
+<admst:open file="$(module).analogfunction.c">/*
+ * $(module).analogfunction.c - analog function implementations
  *
  * This is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -1115,5 +1115,5 @@ double $(module)_d_$(function) (<admst:join select="variable[input='yes']" separ
   <admst:apply-templates select="/module" match="analogfunctionC"/>
 <admst:text format="\n"/>
 </admst:open>
-<admst:message format="$(module).analogfunction.cpp created\n"/>
+<admst:message format="$(module).analogfunction.c created\n"/>
 </admst>