diff --git a/Container.php b/Container.php
index 6df0bea..d681961 100644
--- a/Container.php
+++ b/Container.php
@@ -167,8 +167,8 @@ class Container implements ContainerInterface
             throw new ReflectionException('Class ' . $className . ' cannot be instantiated');
         }
 
-        if (($handler = $reflect->getConstructor()) !== null) {
-            $construct = $this->mergeParams($this->getMethodParams($handler), $construct);
+        if (empty($construct) && ($handler = $reflect->getConstructor()) !== null) {
+            $construct = $this->getMethodParams($handler);
         }
 
         $newInstance = $reflect->newInstanceArgs($construct);