diff --git a/browser/base/content/aboutDialog.xhtml b/browser/base/content/aboutDialog.xhtml
index f9f677eb4cda..90a568a17dd6 100644
--- a/browser/base/content/aboutDialog.xhtml
+++ b/browser/base/content/aboutDialog.xhtml
@@ -8,12 +8,6 @@
 <?xml-stylesheet href="chrome://browser/content/aboutDialog.css" type="text/css"?>
 <?xml-stylesheet href="chrome://branding/content/aboutDialog.css" type="text/css"?>
 
-<!DOCTYPE window [
-#ifdef XP_MACOSX
-#include browser-doctype.inc
-#endif
-]>
-
 <window xmlns:html="http://www.w3.org/1999/xhtml"
         xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
         id="aboutDialog"
diff --git a/browser/base/content/browser-doctype.inc b/browser/base/content/browser-doctype.inc
deleted file mode 100644
index d3e26386deae..000000000000
--- a/browser/base/content/browser-doctype.inc
+++ /dev/null
@@ -1,2 +0,0 @@
-<!ENTITY % brandDTD SYSTEM "chrome://branding/locale/brand.dtd" >
-%brandDTD;
diff --git a/browser/base/content/hiddenWindowMac.xhtml b/browser/base/content/hiddenWindowMac.xhtml
index ca46212d80b1..746b90098227 100644
--- a/browser/base/content/hiddenWindowMac.xhtml
+++ b/browser/base/content/hiddenWindowMac.xhtml
@@ -8,10 +8,6 @@
 
 <?xml-stylesheet href="chrome://browser/skin/webRTC-menubar-indicator.css" type="text/css"?>
 
-<!DOCTYPE window [
-#include browser-doctype.inc
-]>
-
 <window id="main-window"
         xmlns:html="http://www.w3.org/1999/xhtml"
         xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
diff --git a/browser/base/content/macWindow.inc.xhtml b/browser/base/content/macWindow.inc.xhtml
index f5f1358e3442..f13f6b2a2872 100644
--- a/browser/base/content/macWindow.inc.xhtml
+++ b/browser/base/content/macWindow.inc.xhtml
@@ -7,8 +7,7 @@
 # This include file should only contain things that are needed to support MacOS
 # specific features that are needed for all top level windows. If the feature is
 # also needed in browser.xhtml, it should go in one of the various include files
-# below that are shared with browser.xhtml. When including this file,
-# browser-doctype.inc must also be included.
+# below that are shared with browser.xhtml.
 
 <linkset>
   <html:link rel="localization" href="branding/brand.ftl"/>
diff --git a/browser/base/content/pageinfo/pageInfo.xhtml b/browser/base/content/pageinfo/pageInfo.xhtml
index f40ffd3778d8..e7a166fcdf99 100644
--- a/browser/base/content/pageinfo/pageInfo.xhtml
+++ b/browser/base/content/pageinfo/pageInfo.xhtml
@@ -6,12 +6,6 @@
 <?xml-stylesheet href="chrome://browser/content/pageinfo/pageInfo.css" type="text/css"?>
 <?xml-stylesheet href="chrome://browser/skin/pageInfo.css" type="text/css"?>
 
-<!DOCTYPE window [
-#ifdef XP_MACOSX
-#include ../browser-doctype.inc
-#endif
-]>
-
 <window id="main-window"
   xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
   xmlns:html="http://www.w3.org/1999/xhtml"
diff --git a/browser/components/places/content/places.xhtml b/browser/components/places/content/places.xhtml
index 5d72f55063e8..a92b4934116f 100644
--- a/browser/components/places/content/places.xhtml
+++ b/browser/components/places/content/places.xhtml
@@ -17,9 +17,6 @@
 <!DOCTYPE window [
 <!ENTITY % editMenuOverlayDTD SYSTEM "chrome://global/locale/editMenuOverlay.dtd">
 %editMenuOverlayDTD;
-#ifdef XP_MACOSX
-#include ../../../base/content/browser-doctype.inc
-#endif
 ]>
 
 <window id="places"
diff --git a/browser/components/shell/content/setDesktopBackground.xhtml b/browser/components/shell/content/setDesktopBackground.xhtml
index 778285b410e2..a7d4ced792b6 100644
--- a/browser/components/shell/content/setDesktopBackground.xhtml
+++ b/browser/components/shell/content/setDesktopBackground.xhtml
@@ -7,13 +7,6 @@
 <?xml-stylesheet href="chrome://global/skin/global.css" type="text/css"?>
 <?xml-stylesheet href="chrome://browser/skin/setDesktopBackground.css" type="text/css"?>
 
-
-<!DOCTYPE dialog [
-#ifdef XP_MACOSX
-#include ../../../base/content/browser-doctype.inc
-#endif
-]>
-
 <window xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
         xmlns:html="http://www.w3.org/1999/xhtml"
         windowtype="Shell:SetDesktopBackground"
diff --git a/toolkit/mozapps/update/content/updateElevation.xhtml b/toolkit/mozapps/update/content/updateElevation.xhtml
index 1451221a8793..c6275c1314eb 100644
--- a/toolkit/mozapps/update/content/updateElevation.xhtml
+++ b/toolkit/mozapps/update/content/updateElevation.xhtml
@@ -9,12 +9,6 @@
 <?xml-stylesheet href="chrome://global/skin/global.css"?>
 <?xml-stylesheet href="chrome://mozapps/skin/update/updates.css"?>
 
-<!DOCTYPE window [
-#if defined(XP_MACOSX) && MOZ_BUILD_APP == browser
-#include ../../../../browser/base/content/browser-doctype.inc
-#endif
-]>
-
 <window windowtype="Update:Elevation"
         type="child"
         xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"