diff --git a/src/Resources/contao/templates/widgets/form_upload-on-steroids.html5 b/src/Resources/contao/templates/widgets/form_upload-on-steroids.html5
index 6415986..7a499b1 100644
--- a/src/Resources/contao/templates/widgets/form_upload-on-steroids.html5
+++ b/src/Resources/contao/templates/widgets/form_upload-on-steroids.html5
@@ -17,7 +17,7 @@
         <ul id="files_<?= $this->id ?>" class="files">
             <?php /** @var stdClass $file */ ?>
             <?php foreach ($this->files as $key => $file): ?>
-                <li class="file-element ext-<?= $file['extension'] ?>">
+                <li class="file-element<?php if (!$this->showThumbnail): ?> download-element ext-<?= $file['extension'] ?><?php endif ?>">
                     <?php if ($this->showThumbnail): ?>
                         <?= sprintf(
                             '<img src="%s" width="%s" height="%s" alt="%s" itemprop="image">',
@@ -26,7 +26,7 @@
                             $file['thumbnail']['height'],
                             $file['name']
                         ) ?>
-                        <p class="file-name"><?= $file['name'] ?></p>
+                        <br><span class="file-name"><?= $file['name'] ?></span>
                     <?php else: ?>
                         <span class="file-name"><?= $file['name'] ?></span>
                     <?php endif; ?>
diff --git a/src/Widgets/UploadOnSteroids.php b/src/Widgets/UploadOnSteroids.php
index 06cf533..0d0eec8 100644
--- a/src/Widgets/UploadOnSteroids.php
+++ b/src/Widgets/UploadOnSteroids.php
@@ -285,7 +285,7 @@ private function validateMultipleUpload(): void
         }
 
         $inputName = $this->name;
-        $values    = \array_map('\Contao\StringUtil::binToUuid', $this->value);
+        $values    = \array_map('\Contao\StringUtil::binToUuid', (array) $this->value);
 
         $files      = [];
         $inputFiles = $this->getMultipleUploadedFiles();
@@ -367,7 +367,7 @@ private function deselectFile(string $inputName): void
             return;
         }
 
-        $values     = \array_map('\Contao\StringUtil::binToUuid', $this->value);
+        $values     = \array_map('\Contao\StringUtil::binToUuid', (array) $this->value);
         $diffValues = \array_values(\array_diff($values, $post['reset']));
 
         $this->value = \array_map('\Contao\StringUtil::uuidToBin', $diffValues);
@@ -408,7 +408,7 @@ private function deleteFile(string $inputName): void
             return;
         }
 
-        $values     = \array_map('\Contao\StringUtil::binToUuid', $this->value);
+        $values     = \array_map('\Contao\StringUtil::binToUuid', (array) $this->value);
         $diffValues = \array_values(\array_diff($values, $post['delete']));
 
         foreach ($post['delete'] as $delete) {