diff --git a/project_src_github.test b/project_src_github.test
index d8ec85f..e8b6a81 100644
--- a/project_src_github.test
+++ b/project_src_github.test
@@ -359,7 +359,8 @@ class ProjectSrcGithubFileTests extends ProjectSrcGithubBaseCase {
       $get = $root . '/' . $ref . '/download.tar.gz';
 
       // Test a managed file.
-      $tarball = file_get_contents(file_create_url($get));
+      $response = drupal_http_request(file_create_url($get));
+      $tarball = $response['data'];
 
       // Save the tarball to the temp directory.
       $tar_name = md5($get) . '.tar.gz';