diff --git a/configure.ac b/configure.ac
index 7021343..c841ba4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -4,6 +4,7 @@
 AM_INIT_AUTOMAKE([1.10 -Wall no-define foreign])
 
 AC_CONFIG_HEADERS([config.h])
+AM_MAINTAINER_MODE
 AC_PROG_CXX
 AC_PROG_RANLIB
 AM_PROG_AR