diff --git a/src/widgets/previewjob.cpp b/src/widgets/previewjob.cpp
--- a/src/widgets/previewjob.cpp
+++ b/src/widgets/previewjob.cpp
@@ -444,6 +444,7 @@
         succeeded = false;
         items.removeFirst();
         KIO::Job *job = KIO::stat(currentItem.item.url(), KIO::HideProgressInfo);
+        job->addMetaData(QStringLiteral("thumbnail"), QStringLiteral("1"));
         job->addMetaData(QStringLiteral("no-auth-prompt"), QStringLiteral("true"));
         q->addSubjob(job);
     }