diff --git a/devtools/shared/loader/Loader.jsm b/devtools/shared/loader/Loader.jsm
index e6a596ef2ce2..5b46ae863f64 100644
--- a/devtools/shared/loader/Loader.jsm
+++ b/devtools/shared/loader/Loader.jsm
@@ -11,8 +11,8 @@
 var { Loader, Require, resolveURI, unload } = ChromeUtils.import(
   "resource://devtools/shared/loader/base-loader.js"
 );
-var { requireRawId } = ChromeUtils.import(
-  "resource://devtools/shared/loader/loader-plugin-raw.jsm"
+var { requireRawId } = ChromeUtils.importESModule(
+  "resource://devtools/shared/loader/loader-plugin-raw.sys.mjs"
 );
 const { AppConstants } = ChromeUtils.import(
   "resource://gre/modules/AppConstants.jsm"
diff --git a/devtools/shared/loader/loader-plugin-raw.jsm b/devtools/shared/loader/loader-plugin-raw.sys.mjs
similarity index 92%
rename from devtools/shared/loader/loader-plugin-raw.jsm
rename to devtools/shared/loader/loader-plugin-raw.sys.mjs
index d75a17484b8b..237c2668b7ce 100644
--- a/devtools/shared/loader/loader-plugin-raw.jsm
+++ b/devtools/shared/loader/loader-plugin-raw.sys.mjs
@@ -2,8 +2,6 @@
  * 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/. */
 
-"use strict";
-
 const { NetUtil } = ChromeUtils.import("resource://gre/modules/NetUtil.jsm");
 
 /**
@@ -12,7 +10,7 @@ const { NetUtil } = ChromeUtils.import("resource://gre/modules/NetUtil.jsm");
  * This function handles "raw!" and "theme-loader!" requires.
  * See also: https://github.com/webpack/raw-loader.
  */
-const requireRawId = function(id, require) {
+export const requireRawId = function(id, require) {
   const index = id.indexOf("!");
   const rawId = id.slice(index + 1);
   let uri = require.resolve(rawId);
@@ -39,5 +37,3 @@ const requireRawId = function(id, require) {
   // result here.
   return data;
 };
-
-const EXPORTED_SYMBOLS = ["requireRawId"];
diff --git a/devtools/shared/loader/moz.build b/devtools/shared/loader/moz.build
index 29ca2da741b5..33a5046fd8f7 100644
--- a/devtools/shared/loader/moz.build
+++ b/devtools/shared/loader/moz.build
@@ -14,7 +14,7 @@ if CONFIG["MOZ_DEVTOOLS"] == "all":
 DevToolsModules(
     "base-loader.js",
     "builtin-modules.js",
-    "loader-plugin-raw.jsm",
+    "loader-plugin-raw.sys.mjs",
     "Loader.jsm",
     "worker-loader.js",
 )