diff --git a/configure.ac b/configure.ac
index 11e8cd81..e230500b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,6 +1,7 @@
 AC_PREREQ([2.65])
 AC_INIT([ebusd], [0.2.0], [roland.jax@liwest.at], [ebusd], [https://github.com/yuhu-/ebusd])
 
+AC_CONFIG_SRCDIR([src/main.cpp])
 AC_CONFIG_AUX_DIR([build])
 AM_INIT_AUTOMAKE([1.11 -Wall -Werror foreign])
 
@@ -10,7 +11,7 @@ AC_CONFIG_HEADERS([config.h])
 
 AC_PROG_CXX
 
-PKG_CHECK_MODULES([LIBEBUS], [libebus-0.1 >= 0.1])
+PKG_CHECK_MODULES([LIBEBUS], [libebus-0.1 >= 0.1.0])
 
 AC_CONFIG_FILES([Makefile])
 AC_OUTPUT