diff --git a/README.md b/README.md
index 456b77d..836cc94 100644
--- a/README.md
+++ b/README.md
@@ -74,7 +74,7 @@ This command create a clone of main git repositories and organize its.
 This command is a helper to run a Vagrant virtual machine in the right place with YunoHost installed (but not postinstalled).
 ```shell
 cd /path/to/dev/env
-./ynh-dev run ynh.local unstable64
+./ynh-dev run ynh.local unstable
 ```
 
 The `run` command takes 2 arguments: domain and YunoHost version.
@@ -163,7 +163,7 @@ To kill the vm, just do on your host:
 
 ```shell
 cd /path/to/dev/env
-vagrant destroy unstable64
+vagrant destroy unstable
 # or
 ./ynh-dev kill
 ```
@@ -172,7 +172,7 @@ To suspend the vm
 
 ```shell
 cd /path/to/dev/env
-vagrant suspend unstable64
+vagrant suspend unstable
 ```
 
 ## 2. Directly on a YunoHost instance
diff --git a/ynh-dev b/ynh-dev
index 0c3dffc..9c06583 100755
--- a/ynh-dev
+++ b/ynh-dev
@@ -32,9 +32,9 @@ VERSION
     stable32
     testing32
     unstable32
-    stable64
-    testing64
-    unstable64
+    stable
+    testing
+    unstable
 EOF
 }
 
@@ -102,7 +102,7 @@ elif [ "$1" = "create-env" ]; then
 elif [ "$1" = "run" ]; then
 
     DOMAIN=$2
-    VERSION='stable64'
+    VERSION='stable'
     if [ "$#" = "3" ]; then
         VERSION=$3
     fi
@@ -111,15 +111,15 @@ elif [ "$1" = "run" ]; then
     echo ""
 
     # Get vagrant box info from version
-    if [ "$VERSION" = "stable64" ]; then
+    if [ "$VERSION" = "stable" ]; then
         BOX_NAME="yunohost/jessie-amd64-stable"
         BOX_URL="https://build.yunohost.org/yunohost-jessie-amd64-stable.box"
         IP="192.168.33.80"
-    elif [ "$VERSION" = "testing64" ]; then
+    elif [ "$VERSION" = "testing" ]; then
         BOX_NAME="yunohost/jessie-amd64-testing"
         BOX_URL="https://build.yunohost.org/yunohost-jessie-amd64-testing.box"
         IP="192.168.33.81"
-    elif [ "$VERSION" = "unstable64" ]; then
+    elif [ "$VERSION" = "unstable" ]; then
         BOX_NAME="yunohost/jessie-amd64-unstable"
         BOX_URL="https://build.yunohost.org/yunohost-jessie-amd64-unstable.box"
         IP="192.168.33.82"