diff --git a/scripts/_common.sh b/scripts/_common.sh
index 1e63791..7b84705 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -28,17 +28,19 @@ exec_as() {
 #=================================================
 
 # Check if an URL is already handled
-# usage: is_url_handled URL
+# usage: is_url_handled --domain=DOMAIN --path=PATH_URI
 is_url_handled() {
     # Declare an array to define the options of this helper.
-    declare -Ar args_array=( [u]=url= )
-    local url
+    local legacy_args=dp
+    declare -Ar args_array=( [d]=domain= [p]=path= )
+    local domain
+    local path
     # Manage arguments with getopts
     ynh_handle_getopts_args "$@"
 
     # Try to get the url with curl, and keep the http code and an eventual redirection url.
     local curl_output="$(curl --insecure --silent --output /dev/null \
-      --write-out '%{http_code};%{redirect_url}' "$url")"
+      --write-out '%{http_code};%{redirect_url}' https://127.0.0.1$path --header "Host: $domain" --resolve $domain:443:127.0.0.1)"
 
     # Cut the output and keep only the first part to keep the http code
     local http_code="${curl_output%%;*}"
diff --git a/scripts/change_url b/scripts/change_url
index 1f92a0e..c9f7a9c 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -99,7 +99,7 @@ fi
 if [ $change_domain -eq 1 ]
 then
 	# Check if .well-known is available for this domain
-	if is_url_handled --url="https://$domain/.well-known/caldav" || is_url_handled --url="https://$domain/.well-known/carddav"
+	if is_url_handled --domain="$domain" --path="/.well-known/caldav" || is_url_handled --domain="$domain" --path="/.well-known/carddav"
 	then
 		ynh_print_warn --message="Another app already uses the domain $domain to serve a caldav/carddav feature. You may encounter issues when dealing with your calendar or address book."
 
diff --git a/scripts/install b/scripts/install
index f3325a4..5c80e56 100755
--- a/scripts/install
+++ b/scripts/install
@@ -93,7 +93,7 @@ ynh_setup_source --dest_dir="$final_path"
 ynh_script_progression --message="Configuring nginx web server..." --weight=2
 
 # Check if .well-known is available for this domain
-if is_url_handled --url="https://$domain/.well-known/caldav" || is_url_handled --url="https://$domain/.well-known/carddav"
+if is_url_handled --domain="$domain" --path="/.well-known/caldav" || is_url_handled --domain="$domain" --path="/.well-known/carddav"
 then
     ynh_print_warn --message="Another app already uses the domain $domain to serve a caldav/carddav feature. You may encounter issues when dealing with your calendar or address book."
 
diff --git a/scripts/restore b/scripts/restore
index 3538a74..c62be63 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -48,7 +48,7 @@ test ! -d $final_path \
 ynh_restore_file --origin_path="/etc/nginx/conf.d/$domain.d/$app.conf"
 
 # Check if .well-known is available for this domain
-if is_url_handled --url="https://$domain/.well-known/caldav" || is_url_handled --url="https://$domain/.well-known/carddav"
+if is_url_handled --domain="$domain" --path="/.well-known/caldav" || is_url_handled --domain="$domain" --path="/.well-known/carddav"
 then
     ynh_print_warn --message="Another app already uses the domain $domain to serve a caldav/carddav feature. You may encounter issues when dealing with your calendar or address book."
 
diff --git a/scripts/upgrade b/scripts/upgrade
index a25f171..bcc8182 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -155,7 +155,7 @@ ynh_remove_nginx_config $YNH_PHP_VERSION
 ynh_app_setting_delete --app=$app --key="checksum__etc_nginx_conf.d_$domain.d_$app.conf"
 
 # Check if .well-known is available for this domain
-if is_url_handled --url="https://$domain/.well-known/caldav" || is_url_handled --url="https://$domain/.well-known/carddav"
+if is_url_handled --domain="$domain" --path="/.well-known/caldav" || is_url_handled --domain="$domain" --path="/.well-known/carddav"
 then
     ynh_print_warn --message="Another app already uses the domain $domain to serve a caldav/carddav feature. You may encounter issues when dealing with your calendar or address book."