diff --git a/CHANGELOG.md b/CHANGELOG.md
index ee14b5f..bf58fe5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@
 
 ### Feat
 - **Tracker:** Add `retry in` field when failed
+- **UserInfo:** Add Cache Lock of user access_{time,ip} update
 
 ### Fix
 - **Cookies:** Fix session sep from `%` to `_`
diff --git a/apps/models/form/Links/EditForm.php b/apps/models/form/Links/EditForm.php
index b71b0f4..645d5c3 100644
--- a/apps/models/form/Links/EditForm.php
+++ b/apps/models/form/Links/EditForm.php
@@ -45,7 +45,7 @@ protected function checkLinkData()
             'administrator' => $this->link_admin, 'email' => $this->link_email,
             'reason' => $this->link_reason
         ];
-        if ($this->link_id !== 0) {  // Check if old links should be update
+        if ((int)$this->link_id !== 0) {  // Check if old links should be update
             $this->link_old_data = app()->pdo->createCommand('SELECT * FROM `links` WHERE id = :id')->bindParams([
                 'id' => $this->link_id
             ])->queryOne();
@@ -55,7 +55,7 @@ protected function checkLinkData()
             $this->link_new_data['id'] = $this->link_id;
 
             // Diff old and new data.
-            $this->link_data_diff = array_diff($this->link_new_data, $this->link_old_data);
+            $this->link_data_diff = array_diff_assoc($this->link_new_data, $this->link_old_data);
             if (count($this->link_data_diff) === 0) {
                 $this->buildCallbackFailMsg('links:update', 'No data update');
             }