diff --git a/src/Controller/MediaController.php b/src/Controller/MediaController.php
index bce62db51..112dc19d5 100755
--- a/src/Controller/MediaController.php
+++ b/src/Controller/MediaController.php
@@ -85,7 +85,7 @@ public function previewAction(Request $request): Response
 
         $form->handleRequest($request);
 
-        if ($form->isValid()) {
+        if ($form->isSubmitted() && $form->isValid()) {
             $this->setMediaLocales($media, $request);
             $this->setMediaPathIfExists($media);
             $mediaTemplate = $this->mediaProviderResolver->resolveProvider($media)->getTemplate();