diff --git a/chrome/content/zotero/standalone/standalone.xul b/chrome/content/zotero/standalone/standalone.xul
index ff0cc912a..15c7db22b 100644
--- a/chrome/content/zotero/standalone/standalone.xul
+++ b/chrome/content/zotero/standalone/standalone.xul
@@ -35,7 +35,6 @@
 
 <!DOCTYPE window [
 	<!ENTITY % globalDTD SYSTEM "chrome://global/locale/global.dtd"> %globalDTD;
-	<!ENTITY % charsetDTD SYSTEM "chrome://global/locale/charsetOverlay.dtd" > %charsetDTD;
 	<!ENTITY % textcontextDTD SYSTEM "chrome://global/locale/textcontext.dtd" > %textcontextDTD;
 	<!ENTITY % standaloneDTD SYSTEM "chrome://zotero/locale/standalone.dtd" > %standaloneDTD;
 	<!ENTITY % brandDTD SYSTEM "chrome://branding/locale/brand.dtd" > %brandDTD;
diff --git a/chrome/content/zotero/tab.xul b/chrome/content/zotero/tab.xul
index de1b7b1e9..fba04011f 100644
--- a/chrome/content/zotero/tab.xul
+++ b/chrome/content/zotero/tab.xul
@@ -10,8 +10,6 @@
 <!DOCTYPE window [
 <!ENTITY % globalDTD SYSTEM "chrome://global/locale/global.dtd">
 %globalDTD;
-<!ENTITY % charsetDTD SYSTEM "chrome://global/locale/charsetOverlay.dtd" >
-%charsetDTD;
 <!ENTITY % textcontextDTD SYSTEM "chrome://global/locale/textcontext.dtd" >
 %textcontextDTD;
 <!ENTITY % standaloneDTD SYSTEM "chrome://zotero/locale/standalone.dtd" >