--- a/devtools/client/webconsole/new-console-output/test/mochitest/head.js
+++ b/devtools/client/webconsole/new-console-output/test/mochitest/head.js
@@ -35,17 +35,17 @@ registerCleanupFunction(function* () {
  *
  * @param string url
  *        The URL for the tab to be opened.
  * @return Promise
  *         Resolves when the tab has been added, loaded and the toolbox has been opened.
  *         Resolves to the toolbox.
  */
 var openNewTabAndConsole = Task.async(function* (url) {
-  let toolbox = yield openNewTabAndToolbox(TEST_URI, "webconsole");
+  let toolbox = yield openNewTabAndToolbox(url, "webconsole");
   let hud = toolbox.getCurrentPanel().hud;
   hud.jsterm._lazyVariablesView = false;
   return hud;
 });
 
 /**
  * Wait for messages in the web console output, resolving once they are receieved.
  *