diff --git a/configure.ac b/configure.ac
index be16095..2dc566d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,9 +1,6 @@
-m4_define([pkg_version],  [0.15])
-#m4_define([pkg_revision], [005])
-m4_define([pkg_version],  m4_ifdef([pkg_revision], [pkg_version.pkg_revision], [pkg_version]))
-
-AC_INIT([ttynvt],[pkg_version],[frj@thrane.eu])
+AC_INIT([ttynvt],[0.15],[frj@thrane.eu])
 AM_INIT_AUTOMAKE([foreign dist-xz])
+
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
 
 AC_USE_SYSTEM_EXTENSIONS
@@ -12,8 +9,6 @@ AC_PROG_CC
 
 AC_PROG_INSTALL
 
-AC_HEADER_STDC
-
 define([AC_LIBTOOL_LANG_CXX_CONFIG], [:])dnl
 define([AC_LIBTOOL_LANG_F77_CONFIG], [:])dnl
 define([AC_LIBTOOL_LANG_GCJ_CONFIG], [:])dnl