diff --git a/src/backends/test-repo/implementation.js b/src/backends/test-repo/implementation.js
index 61f0bebf..18180aa3 100644
--- a/src/backends/test-repo/implementation.js
+++ b/src/backends/test-repo/implementation.js
@@ -93,10 +93,10 @@ export default class TestRepo {
     return Promise.resolve();
   }
 
-  deleteEntry(path, commitMessage) {
+  deleteFile(path, commitMessage) {
     const folder = path.substring(0, path.lastIndexOf('/'));
     const fileName = path.substring(path.lastIndexOf('/') + 1);
-    window.repoFiles[folder][fileName] = undefined;
+    delete window.repoFiles[folder][fileName];
     return Promise.resolve();
   }
 }