diff --git a/scripts/install b/scripts/install
index 9757760..a3a8db0 100755
--- a/scripts/install
+++ b/scripts/install
@@ -51,7 +51,7 @@ ynh_app_setting_set $app port $port
 ynh_install_nodejs 4.8.7
 
 # Install mongodb
-wget https://www.mongodb.org/static/pgp/server-3.2.asc -o - | apt-key add -
+wget https://www.mongodb.org/static/pgp/server-3.2.asc -O - | apt-key add -
 echo "deb http://repo.mongodb.org/apt/debian jessie/mongodb-org/3.2 main" | sudo tee /etc/apt/sources.list.d/mongodb-org-3.2.list
 
 ynh_install_app_dependencies "mongodb-org mongodb-org-server mongodb-org-shell mongodb-org-mongos mongodb-org-tools"