diff --git a/devtools/client/framework/toolbox.xhtml b/devtools/client/framework/toolbox.xhtml
index 6af9751cd2f6..a08da60e7488 100644
--- a/devtools/client/framework/toolbox.xhtml
+++ b/devtools/client/framework/toolbox.xhtml
@@ -7,13 +7,8 @@
 <?xml-stylesheet href="resource://devtools/client/shared/components/NotificationBox.css" type="text/css"?>
 <?xml-stylesheet href="resource://devtools/client/framework/components/DebugTargetErrorPage.css" type="text/css"?>
 
-<!DOCTYPE window [
-<!ENTITY % toolboxDTD SYSTEM "chrome://devtools/locale/toolbox.dtd" >
-%toolboxDTD;
-<!ENTITY % globalKeysDTD SYSTEM "chrome://global/locale/globalKeys.dtd">
-%globalKeysDTD;
-]>
 
+<!DOCTYPE window>
 <window xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
         xmlns:html="http://www.w3.org/1999/xhtml"
         csp="default-src chrome: resource:; img-src chrome: resource: data:; object-src 'none'">
diff --git a/devtools/client/locales/en-US/sourceeditor.properties b/devtools/client/locales/en-US/sourceeditor.properties
index 94272449fbcf..68563a743dae 100644
--- a/devtools/client/locales/en-US/sourceeditor.properties
+++ b/devtools/client/locales/en-US/sourceeditor.properties
@@ -44,16 +44,12 @@ toggleComment.commandkey=/
 # conjunction with accel (Command on Mac or Ctrl on other platforms) to reduce
 # indentation level in CodeMirror. However, its default value also used by
 # the Toolbox to switch between tools so we disable it.
-#
-# DO NOT translate this key without proper synchronization with toolbox.dtd.
 indentLess.commandkey=[
 
 # LOCALIZATION NOTE  (indentMore.commandkey): This is the key to use in
 # conjunction with accel (Command on Mac or Ctrl on other platforms) to increase
 # indentation level in CodeMirror. However, its default value also used by
 # the Toolbox to switch between tools
-#
-# DO NOT translate this key without proper synchronization with toolbox.dtd.
 indentMore.commandkey=]
 
 # LOCALIZATION NOTE  (moveLineUp.commandkey): This is the combination of keys
diff --git a/devtools/client/locales/en-US/toolbox.dtd b/devtools/client/locales/en-US/toolbox.dtd
deleted file mode 100644
index 1c86a43960e7..000000000000
--- a/devtools/client/locales/en-US/toolbox.dtd
+++ /dev/null
@@ -1,9 +0,0 @@
-<!-- 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/. -->
-
-<!-- LOCALIZATION NOTE : FILE This file contains the Toolbox strings -->
-<!-- LOCALIZATION NOTE : FILE Do not translate key -->
-
-<!ENTITY closeCmd.key  "W">
-<!ENTITY toggleToolbox.key  "I">