diff --git a/mumble-vm-install.sh b/mumble-vm-install.sh
index a58a323..fcb274d 100755
--- a/mumble-vm-install.sh
+++ b/mumble-vm-install.sh
@@ -193,7 +193,7 @@ hash guix ; report "hash guix"
 import_gpg_key ; report "Import GPG key"
 
 guix shell -C --network git nss-certs -- \
-    git clone https://git.a-lec.org/GNUtoo/guix-mumble-vm.git ; \
+    git clone https://git.a-lec.org/GNUtoo/guix-mumble-vm.git -b guix-installer ; \
     report "Cloning machine configuration git"
 
 cd "guix-mumble-vm" ; report "cd guix-mumble-vm"