diff --git a/devtools/shared/fronts/emulation.js b/devtools/shared/fronts/emulation.js
index 2be1bfef59f1..99dbf565bcf6 100644
--- a/devtools/shared/fronts/emulation.js
+++ b/devtools/shared/fronts/emulation.js
@@ -3,7 +3,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 "use strict";
 
-const { Front, FrontClass } = require("devtools/shared/protocol");
+const { Front, FrontClassWithSpec } = require("devtools/shared/protocol");
 const { emulationSpec } = require("devtools/shared/specs/emulation");
 
 /**