diff --git a/config/cms.php b/config/cms.php
index e0f58e236..bfe1930bb 100644
--- a/config/cms.php
+++ b/config/cms.php
@@ -252,14 +252,20 @@ return [
     | folder - a folder prefix for storing all generated files inside.
     | path   - the public path relative to the application base URL,
     |          or you can specify a full URL path.
+    |
+    | Optionally, you can specify how long temporary URLs to protected files
+    | in cloud storage (ex. AWS, RackSpace) are valid for by setting
+    | temporaryUrlTTL to a value in seconds to define a validity period. This
+    | is only used for the 'uploads' config when using a supported cloud disk
     */
 
     'storage' => [
 
         'uploads' => [
-            'disk'   => 'local',
-            'folder' => 'uploads',
-            'path'   => '/storage/app/uploads',
+            'disk'            => 'local',
+            'folder'          => 'uploads',
+            'path'            => '/storage/app/uploads',
+            'temporaryUrlTTL' => 3600,
         ],
 
         'media' => [
diff --git a/modules/backend/controllers/Files.php b/modules/backend/controllers/Files.php
index 220b26aab..525d8f5f8 100644
--- a/modules/backend/controllers/Files.php
+++ b/modules/backend/controllers/Files.php
@@ -2,6 +2,7 @@
 
 use View;
 use Cache;
+use Config;
 use Backend;
 use Response;
 use System\Models\File as FileModel;
@@ -65,18 +66,18 @@ class Files extends Controller
         $url = null;
         $disk = $file->getDisk();
         $adapter = $disk->getAdapter();
-        if (is_a($adapter, 'League\Flysystem\Cached\CachedAdapter')) {
+        if ($adapter instanceof \League\Flysystem\Cached\CachedAdapter) {
             $adapter = $adapter->getAdapter();
         }
 
-        if (is_a($adapter, 'League\Flysystem\AwsS3v3\AwsS3Adapter') ||
-            is_a($adapter, 'League\Flysystem\Rackspace\RackspaceAdapter') ||
+        if (($adapter instanceof \League\Flysystem\AwsS3v3\AwsS3Adapter) ||
+            ($adapter instanceof \League\Flysystem\Rackspace\RackspaceAdapter) ||
             method_exists($adapter, 'getTemporaryUrl')
         ) {
             if (empty($path)) {
                 $path = $file->getDiskPath();
             }
-            $expires = now()->addMinutes(60);
+            $expires = now()->addSeconds(Config::get('cms.storage.uploads.temporaryUrlTTL', 3600));
 
             $url = Cache::remember('backend.file:' . $path, $expires, function () use ($disk, $path, $expires) {
                 return $disk->temporaryUrl($path, $expires);