diff --git a/src/Generators/AbstractTagGenerator.php b/src/Generators/AbstractTagGenerator.php
index af4ebee..875617a 100644
--- a/src/Generators/AbstractTagGenerator.php
+++ b/src/Generators/AbstractTagGenerator.php
@@ -215,7 +215,7 @@ protected function generateOwnerTags()
         if ($reflection->isAbstract()) {
             return;
         }
-        if ($reflection instanceof Extension) {
+        if (Injector::inst()->get($this->className) instanceof Extension) {
             $owners = iterator_to_array($this->getOwnerClasses($className));
             $owners[] = $this->className;
             $tagString = sprintf('\\%s $owner', implode("|\\", array_values($owners)));