diff --git a/cf/auth-modules.m4 b/cf/auth-modules.m4
index 5fb105ced..93e2195ad 100644
--- a/cf/auth-modules.m4
+++ b/cf/auth-modules.m4
@@ -1,9 +1,11 @@
 dnl $Id$
 dnl
 dnl Figure what authentication modules should be built
+dnl
+dnl rk_AUTH_MODULES(module-list)
 
-AC_DEFUN(AC_AUTH_MODULES,[
-AC_MSG_CHECKING(which authentication modules should be built)
+AC_DEFUN(rk_AUTH_MODULES,[
+AC_MSG_CHECKING([which authentication modules should be built])
 
 z='m4_ifval([$1], $1, [sia pam afskauthlib])'
 LIB_AUTH_SUBDIRS=