diff --git a/mystic/install-v2.sh b/mystic/install-v2.sh
index af07bd2..0b4cdc4 100644
--- a/mystic/install-v2.sh
+++ b/mystic/install-v2.sh
@@ -71,8 +71,9 @@ unzip lha-20211125.zip &>/dev/null
 popd &>/dev/null
 pushd $MSTEMPDIR/lha-release-20211125 &>/dev/null
 aclocal
+autoheader
+automake -a
 autoconf
-automake --add-missing
 ./configure
 make
 make install