diff --git a/inc/theme-core.php b/inc/theme-core.php
index 1e9c002..95306ea 100644
--- a/inc/theme-core.php
+++ b/inc/theme-core.php
@@ -232,11 +232,11 @@ function custom_upload_filter($file)
 
     $ext = '.' . $info['extension'];
 
-    $prdfix = kratos_option('g_renameother_prdfix', '') . '-';
+    $prdfix = kratos_option('g_renameother_prdfix', getdomain(home_url()), 'g_renameother') . '-';
 
     $img_mimes = array('jpg', 'JPG', 'jpeg', 'JPEG', 'gif', 'GIF', 'png', 'PNG', 'bmp', 'BMP', 'webp', 'WEBP', 'svg', 'SVG');
 
-    $str = kratos_option('g_renameother_mime', '');
+    $str = kratos_option('g_renameother_mime', 'tar|zip|gz|gzip|rar|7z', 'g_renameother');
     $arr = explode("|", $str);
     $arr = array_filter($arr);
 
@@ -255,7 +255,7 @@ function custom_upload_filter($file)
         }
     }
 
-    if (kratos_option('g_renameother', false)) {
+    if (kratos_option('g_renameother', false, 'g_renameother')) {
         foreach ($compressed_mimes as $compressed_mime) {
             if ($info['extension'] == $compressed_mime) {
                 $file['name'] = $prdfix . $file['name'];
diff --git a/inc/theme-options.php b/inc/theme-options.php
index 15ef40c..ff459e9 100644
--- a/inc/theme-options.php
+++ b/inc/theme-options.php
@@ -12,10 +12,17 @@ defined('ABSPATH') || exit;
 $prefix = 'kratos_options';
 
 if (!function_exists('kratos_option')) {
-    function kratos_option($option = '', $default = null)
+    function kratos_option($option = '', $default = null, $fieldset = '')
     {
         $options = get_option('kratos_options');
-        return (isset($options[$option])) ? $options[$option] : $default;
+
+        if (!empty($fieldset)) {
+            $results = $options[$fieldset . "_fieldset"][$option];
+        } else {
+            $results = $options[$option];
+        }
+
+        return (isset($results)) ? $results : $default;
     }
 }
 
@@ -200,7 +207,7 @@ CSF::createSection($prefix, array(
             ),
             'default' => array(
                 'g_renameother' => false,
-                'g_renameother_prdfix' => '[' . getdomain(home_url()) . ']',
+                'g_renameother_prdfix' => getdomain(home_url()),
                 'g_renameother_mime' => 'tar|zip|gz|gzip|rar|7z',
             ),
         ),