diff --git a/core/test/unit/lib/mobiledoc/converters/mobiledoc-converter_spec.js b/core/test/unit/lib/mobiledoc/converters/mobiledoc-converter_spec.js
index 130013db61b2..6fab8bb7932b 100644
--- a/core/test/unit/lib/mobiledoc/converters/mobiledoc-converter_spec.js
+++ b/core/test/unit/lib/mobiledoc/converters/mobiledoc-converter_spec.js
@@ -27,6 +27,7 @@ describe('Mobiledoc converter', function () {
                     }],
                     ['gallery', {
                         images: [{
+                            fileName: 'test.png',
                             src: '/test.png',
                             width: 1000,
                             height: 500