diff --git a/plugins/generic/htmlArticleGalley/HtmlArticleGalleyPlugin.php b/plugins/generic/htmlArticleGalley/HtmlArticleGalleyPlugin.php
index b570934b0f0..39e068930ac 100644
--- a/plugins/generic/htmlArticleGalley/HtmlArticleGalleyPlugin.php
+++ b/plugins/generic/htmlArticleGalley/HtmlArticleGalleyPlugin.php
@@ -81,17 +81,11 @@ public function articleViewCallback($hookName, $args)
     {
         $request = & $args[0];
         $issue = & $args[1];
+        /** @var \PKP\galley\Galley */
         $galley = & $args[2];
         $article = & $args[3];
 
-        if (!$galley) {
-            return false;
-        }
-
-        $submissionFile = $galley->getFile();
-        /** @var ?Publication */
-        $galleyPublication = null;
-        if ($submissionFile->getData('mimetype') === 'text/html') {
+        if ($galley && $galley->getFileType() === 'text/html') {
             /** @var ?Publication */
             $galleyPublication = null;
             foreach ($article->getData('publications') as $publication) {
@@ -107,7 +101,7 @@ public function articleViewCallback($hookName, $args)
                 'galley' => $galley,
                 'isLatestPublication' => $article->getData('currentPublicationId') === $galley->getData('publicationId'),
                 'galleyPublication' => $galleyPublication,
-                'submissionFile' => $submissionFile,
+                'submissionFile' => $galley->getFile(),
             ]);
             $templateMgr->display($this->getTemplateResource('display.tpl'));