diff --git a/app/Http/Controllers/Api/ApplicationsController.php b/app/Http/Controllers/Api/ApplicationsController.php
index dfc67bfae..701c92d4d 100644
--- a/app/Http/Controllers/Api/ApplicationsController.php
+++ b/app/Http/Controllers/Api/ApplicationsController.php
@@ -2577,6 +2577,12 @@ public function update_by_uuid(Request $request)
             $errors = [];
             $urls = str($urls)->trim()->explode(',')->map(function ($url) use (&$errors) {
                 $url = trim($url);
+
+                // If "domains" is empty clear all URLs from the fqdn column
+                if (blank($url)) {
+                    return null;
+                }
+
                 if (! filter_var($url, FILTER_VALIDATE_URL)) {
                     $errors[] = 'Invalid URL: '.$url;
 
@@ -3841,6 +3847,12 @@ private function validateDataApplications(Request $request, Server $server)
             $errors = [];
             $urls = str($urls)->trim()->explode(',')->map(function ($url) use (&$errors) {
                 $url = trim($url);
+
+                // If "domains" is empty clear all URLs from the fqdn column
+                if (blank($url)) {
+                    return null;
+                }
+
                 if (! filter_var($url, FILTER_VALIDATE_URL)) {
                     $errors[] = 'Invalid URL: '.$url;
 
diff --git a/bootstrap/helpers/api.php b/bootstrap/helpers/api.php
index c23f55c12..d5c2c996b 100644
--- a/bootstrap/helpers/api.php
+++ b/bootstrap/helpers/api.php
@@ -90,7 +90,7 @@ function sharedDataApplications()
         'is_auto_deploy_enabled' => 'boolean',
         'is_force_https_enabled' => 'boolean',
         'static_image' => Rule::enum(StaticImageTypes::class),
-        'domains' => 'string',
+        'domains' => 'string|nullable',
         'redirect' => Rule::enum(RedirectTypes::class),
         'git_commit_sha' => 'string',
         'docker_registry_image_name' => 'string|nullable',