diff --git a/configure.ac b/configure.ac
index 5740553..6257ab9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,6 +1,6 @@
 dnl Process this file with autoconf to produce a configure script.
 
-AC_INIT(libsexpr, m4_esyscmd([tr -d '\n' < VERSION]))
+AC_INIT([libsexpr],[m4_esyscmd(tr -d '\n' < VERSION)])
 
 AC_CONFIG_HEADERS([config.h])
 
@@ -30,8 +30,9 @@ AS_IF([test "x$enable_faststack_alloc" = "xyes"], [
     AC_DEFINE([USE_FASTSTACK_ALLOC], 1, [using faststack allocation within parser])
 ])
 
-AC_OUTPUT([
+AC_CONFIG_FILES([
 Makefile
 lib/libsexpr.pc
 lib/Makefile
 include/Makefile])
+AC_OUTPUT