diff --git a/Speed/ServerController.php b/Speed/ServerController.php
index 01ac954..3ae7467 100644
--- a/Speed/ServerController.php
+++ b/Speed/ServerController.php
@@ -115,8 +115,8 @@ class ServerController extends ApiController
         unset($validated['address_ids']);
         
         // Ensure rate_limit is always present in update data to avoid validation errors
-        if (!isset($validated['rate_limit'])) {
-            $validated['rate_limit'] = $server->rate_limit;
+        if (!array_key_exists('rate_limit', $validated)) {
+            $validated['rate_limit'] = $server->rate_limit ?? null;
         }
         
         // Update server with validated data