diff --git a/devtools/.eslintrc.js b/devtools/.eslintrc.js
index b6ab71a0da3b..6d696c27c5f5 100644
--- a/devtools/.eslintrc.js
+++ b/devtools/.eslintrc.js
@@ -86,16 +86,12 @@ module.exports = {
       },
     },
     {
-      // For all server files, prevent requiring devtools/client modules.
-      files: [
-        "server/**",
-        // The rule also applies to all `shared` files, with the exception of
-        // shared/fronts.
-        // This first pattern matches files in a shared subfolder other than "fronts".
-        "shared/!(fronts)/**",
-        // This second pattern matches files directly under shared.
-        "shared/*.**",
-      ],
+      // For all server and shared files, prevent requiring devtools/client
+      // modules.
+      files: ["server/**", "shared/**"],
+      // devtools-client.js is effectively a client file, but it is still loaded
+      // by test suites in devtools/shared and devtools/server.
+      excludedFiles: ["shared/client/devtools-client.js"],
       rules: {
         "mozilla/reject-some-requires": [
           "error",