diff --git a/audio.experimental.a-lec.org/autogen.sh b/audio.experimental.a-lec.org/autogen.sh
index a340f99..562c777 100755
--- a/audio.experimental.a-lec.org/autogen.sh
+++ b/audio.experimental.a-lec.org/autogen.sh
@@ -8,4 +8,7 @@
 #
 # You should have received a copy of the GNU General Public License
 # along with this file.  If not, see <http://www.gnu.org/licenses/>.
-autoreconf -fi $@
+guix shell -C \
+     autoconf automake coreutils grep m4 sed \
+     -- \
+     autoreconf -fi $@