diff --git a/configure.in b/configure.in
index 28e22ee1c..6187264fc 100644
--- a/configure.in
+++ b/configure.in
@@ -26,7 +26,7 @@ AC_PROG_LIBTOOL
 # AC_PROG_RANLIB is obsolete by AC_PROC_LIBTOOL
 
 dnl Make sure that the asio header files are added.
-ASIO_DIR=include/libtorrent/asio
+ASIO_DIR=$srcdir/include/libtorrent/asio
 AC_CHECK_FILES([$ASIO_DIR/../asio.hpp $ASIO_DIR/ssl/stream.hpp $ASIO_DIR/ip/tcp.hpp ],,AC_MSG_ERROR([ ASIO header files not found. Get them from asio.sourceforge.net and include or symlink them. Example: ln -s ../../../asio/include/asio.hpp include/libtorrent/asio.hpp && ln -s ../../../asio/include/asio include/libtorrent/asio ]) )
 dnl check asio version