diff --git a/src/Command/BuildDocsCommand.php b/src/Command/BuildDocsCommand.php
index b55ae7a..ab461cc 100644
--- a/src/Command/BuildDocsCommand.php
+++ b/src/Command/BuildDocsCommand.php
@@ -155,6 +155,7 @@ private function generateJson(Metas $metas)
 
         $jsonGenerator = new JsonGenerator($metas, $this->buildContext);
         $jsonGenerator->setOutput($this->io);
+        $jsonGenerator->generateJson();
     }
 
     private function renderDocForPDF(Metas $metas)