diff --git a/build_library/virtualbox_ovf.sh b/build_library/virtualbox_ovf.sh
index dc25db872f..dd6ec06b98 100755
--- a/build_library/virtualbox_ovf.sh
+++ b/build_library/virtualbox_ovf.sh
@@ -56,14 +56,18 @@ datez() {
 
 if [[ -n "${FLAGS_output_vagrant}" ]]; then
     cat >"${FLAGS_output_vagrant}" <<EOF
+if Vagrant::VERSION < "1.2.3"
+  raise "Need at least vagrant version 1.2.3, please update"
+end
+
 Vagrant.configure("2") do |config|
-config.vm.base_mac = "${PRIMARY_MAC}"
+  config.vm.base_mac = "${PRIMARY_MAC}"
 
-# SSH in as the default 'core' user, it has the vagrant ssh key.
-config.ssh.username = "core"
+  # SSH in as the default 'core' user, it has the vagrant ssh key.
+  config.ssh.username = "core"
 
-# Disable the base shared folder, guest additions are unavailable.
-config.vm.synced_folder ".", "/vagrant", disabled: true
+  # Disable the base shared folder, guest additions are unavailable.
+  config.vm.synced_folder ".", "/vagrant", disabled: true
 end
 EOF
 fi
diff --git a/build_library/vm_image_util.sh b/build_library/vm_image_util.sh
index a83e966585..305b182a47 100644
--- a/build_library/vm_image_util.sh
+++ b/build_library/vm_image_util.sh
@@ -442,7 +442,7 @@ _write_vagrant_conf() {
     tar -czf "${box}" -C "${VM_TMP_DIR}" "box.ovf" "Vagrantfile" "${dst_name}"
 
     cat > "${VM_README}" <<EOF
-Vagrant >= 1.2 is required. Use something like the following to get started:
+Vagrant >= 1.2.3 is required. Use something like the following to get started:
 vagrant box add coreos path/to/$(basename "${box}")
 vagrant init coreos
 vagrant up