diff --git a/devtools/client/webconsole/new-console-output/test/fixtures/stub-generators/stub-snippets.js b/devtools/client/webconsole/new-console-output/test/fixtures/stub-generators/stub-snippets.js
index f79548e7bc..f0f01a5617 100644
--- a/devtools/client/webconsole/new-console-output/test/fixtures/stub-generators/stub-snippets.js
+++ b/devtools/client/webconsole/new-console-output/test/fixtures/stub-generators/stub-snippets.js
@@ -140,6 +140,10 @@ pageError.set("Reference Error", `
   foo()
 `);
 
+pageError.set("Redeclaration Error", `
+  let a, a;
+`);
+
 module.exports = {
   consoleApi,
   evaluationResult,