diff --git a/core/modules/image/src/Tests/ImageFieldDisplayTest.php b/core/modules/image/src/Tests/ImageFieldDisplayTest.php
index 8fd2aa7..d7e6623 100644
--- a/core/modules/image/src/Tests/ImageFieldDisplayTest.php
+++ b/core/modules/image/src/Tests/ImageFieldDisplayTest.php
@@ -206,12 +206,12 @@ function _testImageFieldFormatters($scheme) {
       'type' => 'image_url',
       'settings' => ['image_style' => ''],
     ];
-    $expected_url = file_create_url($image_uri);
+    $expected_url = file_url_transform_relative(file_create_url($image_uri));
     $this->assertEqual($expected_url, $node->{$field_name}->view($display_options)[0]['#markup']);
 
     // Test the image URL formatter with an image style.
     $display_options['settings']['image_style'] = 'thumbnail';
-    $expected_url = ImageStyle::load('thumbnail')->buildUrl($image_uri);
+    $expected_url = file_url_transform_relative(ImageStyle::load('thumbnail')->buildUrl($image_uri));
     $this->assertEqual($expected_url, $node->{$field_name}->view($display_options)[0]['#markup']);
   }