diff --git a/modules/backend/formwidgets/FileUpload.php b/modules/backend/formwidgets/FileUpload.php
index c488b9093..f6470830a 100644
--- a/modules/backend/formwidgets/FileUpload.php
+++ b/modules/backend/formwidgets/FileUpload.php
@@ -34,9 +34,9 @@ class FileUpload extends FormWidgetBase
     //
 
     /**
-     * @var string Prompt to display if no record is selected.
+     * @var string Prompt text to display for the upload button.
      */
-    public $prompt = 'backend::lang.fileupload.default_prompt';
+    public $prompt = null;
 
     /**
      * @var int Preview image width
@@ -126,7 +126,7 @@ class FileUpload extends FormWidgetBase
         $this->vars['cssDimensions'] = $this->getCssDimensions();
         $this->vars['cssBlockDimensions'] = $this->getCssDimensions('block');
         $this->vars['useCaption'] = $this->useCaption;
-        $this->vars['prompt'] = str_replace('%s', '<i class="icon-upload"></i>', trans($this->prompt));
+        $this->vars['prompt'] = $this->getPromptText();
     }
 
     protected function getFileList()
@@ -166,6 +166,22 @@ class FileUpload extends FormWidgetBase
         return $mode;
     }
 
+    /**
+     * Returns the escaped and translated prompt text to display according to the type.
+     * @return string
+     */
+    protected function getPromptText()
+    {
+        if ($this->prompt === null) {
+            $isMulti = ends_with($this->getDisplayMode(), 'multi');
+            $this->prompt = $isMulti
+                ? 'backend::lang.fileupload.upload_file'
+                : 'backend::lang.fileupload.default_prompt';
+        }
+
+        return str_replace('%s', '<i class="icon-upload"></i>', e(trans($this->prompt)));
+    }
+
     /**
      * Returns the CSS dimensions for the uploaded image,
      * uses auto where no dimension is provided.
diff --git a/modules/backend/formwidgets/fileupload/partials/_file_multi.htm b/modules/backend/formwidgets/fileupload/partials/_file_multi.htm
index f4baf3050..6ae8c2d6b 100644
--- a/modules/backend/formwidgets/fileupload/partials/_file_multi.htm
+++ b/modules/backend/formwidgets/fileupload/partials/_file_multi.htm
@@ -11,8 +11,8 @@
 >
 
     <!-- Upload Button -->
-    <button type="button" class="btn btn-sm btn-primary oc-icon-upload upload-button">
-        <?= e(trans('backend::lang.fileupload.upload_file')) ?>
+    <button type="button" class="btn btn-sm btn-default oc-icon-upload upload-button">
+        <?= $prompt ?>
     </button>
 
     <!-- Existing files -->
diff --git a/modules/system/assets/ui/docs/checkbox.md b/modules/system/assets/ui/docs/checkbox.md
index addbba6d9..a286b62e6 100644
--- a/modules/system/assets/ui/docs/checkbox.md
+++ b/modules/system/assets/ui/docs/checkbox.md
@@ -5,22 +5,22 @@
 Allows a user to select from a small set of binary options.
 
     <div class="checkbox custom-checkbox">
-        <input name="checkbox" value="1" type="checkbox" id="checkbox1">
+        <input name="checkbox" value="1" type="checkbox" id="checkbox1" />
         <label for="checkbox1">Checkbox</label>
     </div>
 
 ### Radio
 
     <div class="radio custom-radio">
-        <input name="radio" value="1" type="radio" id="radio_1">
+        <input name="radio" value="1" type="radio" id="radio_1" />
         <label for="radio_1">Paris</label>
     </div>
     <div class="radio custom-radio">
-        <input checked="checked" name="radio" value="2" type="radio" id="radio_2">
+        <input checked="checked" name="radio" value="2" type="radio" id="radio_2" />
         <label for="radio_2">Dubai</label>
     </div>
     <div class="radio custom-radio">
-        <input name="radio" value="3" type="radio" id="radio_3">
+        <input name="radio" value="3" type="radio" id="radio_3" />
         <label for="radio_3">New Zealand</label>
     </div>