diff --git a/modules/shared/webhook_throttle.php b/modules/shared/webhook_throttle.php
index eb063a0..2407421 100644
--- a/modules/shared/webhook_throttle.php
+++ b/modules/shared/webhook_throttle.php
@@ -10,7 +10,7 @@ function throttle_webhook_channel(string $channel, int $minIntervalSeconds): voi
     $sanitizedChannel = preg_replace('/[^a-z0-9_-]+/i', '_', $channel) ?? 'default';
     $lockPath = sys_get_temp_dir() . '/erp_naurua_webhook_throttle_' . $sanitizedChannel . '.lock';
 
-    $handle = fopen($lockPath, 'c+');
+    $handle = @fopen($lockPath, 'c+');
     if ($handle === false) {
         return;
     }