diff --git a/conf/parameters.yml.dist b/conf/parameters.yml.dist
index 4c7cbfa..faba90d 100644
--- a/conf/parameters.yml.dist
+++ b/conf/parameters.yml.dist
@@ -34,7 +34,7 @@ parameters:
     mailer_encryption: ~
     mailer_auth_mode:  ~
 
-    locale: en
+    locale: __LANGUAGE__
 
     # A secret key that's used to generate certain security-related tokens
     secret: __DESKEY__
diff --git a/manifest.json b/manifest.json
index 2576aab..48a57b7 100644
--- a/manifest.json
+++ b/manifest.json
@@ -47,6 +47,16 @@
                 "name": "admin",
                 "type": "user",
                 "example": "johndoe"
+            },
+                        {
+                "name": "language",
+                "type": "string",
+                "ask": {
+                    "en": "Choose the application language",
+                    "fr": "Choisissez la langue de l'application"
+                },
+                "choices": ["de", "en", "fr", "it", "pt"],
+                "default": "en"
             }
         ]
     }
diff --git a/scripts/install b/scripts/install
index 26a174f..c30b392 100644
--- a/scripts/install
+++ b/scripts/install
@@ -27,6 +27,7 @@ app=$YNH_APP_INSTANCE_NAME
 domain=$YNH_APP_ARG_DOMAIN
 path_url=$YNH_APP_ARG_PATH
 admin=$YNH_APP_ARG_ADMIN
+language=$YNH_APP_ARG_LANGUAGE
 
 #=================================================
 # CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
@@ -46,6 +47,7 @@ ynh_webpath_register --app=$app --domain=$domain --path_url=$path_url
 ynh_app_setting_set --app=$app --key=domain --value=$domain
 ynh_app_setting_set --app=$app --key=path --value=$path_url
 ynh_app_setting_set --app=$app --key=admin --value=$admin
+ynh_app_setting_set --app=$app --key=language --value=$language
 
 #=================================================
 # INSTALL DEPENDENCIES
diff --git a/scripts/upgrade b/scripts/upgrade
index 323c497..68f90d6 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -24,6 +24,7 @@ db_name=$(ynh_app_setting_get --app=$app --key=db_name)
 db_user=$db_name
 db_pwd=$(ynh_app_setting_get --app=$app --key=mysqlpwd)
 deskey=$(ynh_app_setting_get --app=$app --key=deskey)
+language=$(ynh_app_setting_get --app=$app --key=language)
 
 #=================================================
 # CHECK VERSION