diff --git a/Traits/HasBase.php b/Traits/HasBase.php
index 22dd975..337ce39 100644
--- a/Traits/HasBase.php
+++ b/Traits/HasBase.php
@@ -52,12 +52,17 @@ abstract class HasBase implements \Database\Traits\Relation
      * @param string $name
      * @param array $arguments
      * @return $this|mixed
+     * @throws \Exception
      */
     public function __call(string $name, array $arguments)
     {
         if ($name !== 'get') {
             $relation = Kiri::getDi()->get(Relation::class);
-            $relation->getQuery($this->name)->$name(...$arguments);
+            $query    = $relation->getQuery($this->name);
+            if (is_null($query)) {
+                throw new \Exception('Unknown relation method: ' . $name);
+            }
+            $query->$name(...$arguments);
             return $this;
         } else {
             return $this->get();