--- a/devtools/client/debugger/src/components/Editor/Preview/ExceptionPopup.js
+++ b/devtools/client/debugger/src/components/Editor/Preview/ExceptionPopup.js
@@ -13,17 +13,19 @@ const {
   REPS: { StringRep },
 } = Reps;
 
 import actions from "../../../actions";
 
 import { getThreadContext } from "../../../selectors";
 
 import AccessibleImage from "../../shared/AccessibleImage";
-import { DevToolsUtils } from "devtools-modules";
+
+// $FlowIgnore
+const DevToolsUtils = require("devtools/shared/DevToolsUtils");
 
 import type { ThreadContext, StacktraceFrame, Exception } from "../../../types";
 
 type Props = {
   cx: ThreadContext,
   clearPreview: typeof actions.clearPreview,
   selectSourceURL: typeof actions.selectSourceURL,
   exception: Exception,

--- a/devtools/client/debugger/src/utils/utils.js
+++ b/devtools/client/debugger/src/utils/utils.js
@@ -1,16 +1,18 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */
 
 // @flow
 
 import type { SourceContent } from "../types";
-import { DevToolsUtils } from "devtools-modules";
+
+// $FlowIgnore
+const DevToolsUtils = require("devtools/shared/DevToolsUtils");
 
 /**
  * Utils for utils, by utils
  * @module utils/utils
  */
 
 /**
  * @memberof utils/utils