diff --git a/scripts/upgrade b/scripts/upgrade
index 08def0a..05509db 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -179,8 +179,8 @@ ynh_add_config --template="../conf/coturn/turnserver.conf" --destination="$cotur
 
 # Get public IP and set as external IP for coturn
 # note : '|| true' is used to ignore the errors if we can't get the public ipv4 or ipv6
-public_ip4="$(curl ip.yunohost.org)" || true
-public_ip6="$(curl ipv6.yunohost.org)" || true
+public_ip4="$(curl -s ip.yunohost.org)" || true
+public_ip6="$(curl -s ipv6.yunohost.org)" || true
 
 if ( [[ -n "$public_ip4" ]] && ynh_validate_ip4 --ip_address="$public_ip4" || [[ -n "$public_ip6" ]] && ynh_validate_ip6 --ip_address="$public_ip6" )
 then