diff --git a/src/Filter/Filter.php b/src/Filter/Filter.php
index 70bbc43..f22e599 100644
--- a/src/Filter/Filter.php
+++ b/src/Filter/Filter.php
@@ -10,7 +10,7 @@ abstract class Filter
     public string $value;
     public function __construct(array $source)
     {
-        $this->params = $source['param'] ?? '';
+        $this->params = $source['params'] ?? '';
         $this->name = $source['name'];
         $this->value = $source['value'] ?? '';
     }