diff --git a/scripts/install b/scripts/install
index fd3ef57..aa6d052 100755
--- a/scripts/install
+++ b/scripts/install
@@ -191,6 +191,8 @@ fi
 ### `ynh_replace_string` is used to replace a string in a file.
 ### (It's compatible with sed regular expressions syntax)
 
+ynh_replace_string --match_string="__LANGUAGE__" --replace_string="$language" --target_file="$final_path/.env"
+
 ynh_replace_string --match_string="__DOMAIN__" --replace_string="$domain" --target_file="$final_path/.env"
 ynh_replace_string --match_string="__PATH__" --replace_string="$path_url" --target_file="$final_path/.env"
 ynh_replace_string --match_string="__DB_NAME__" --replace_string="$db_name" --target_file="$final_path/.env"
diff --git a/sources/extra_files/app/.env b/sources/extra_files/app/.env
index 0ea9e18..ebf2628 100644
--- a/sources/extra_files/app/.env
+++ b/sources/extra_files/app/.env
@@ -1,6 +1,6 @@
 APP_ENV=production
 APP_DEBUG=false
-APP_LOCALE=en
+APP_LOCALE=__LANGUAGE__
 APP_URL=https://__DOMAIN____PATH__/index.php
 APP_KEY=__APP_KEY__
 APP_CIPHER=AES-256-CBC