diff --git a/chrome/locale/en-US/zotero/preferences.dtd b/chrome/locale/en-US/zotero/preferences.dtd
index c4c5bbefdb..f578232d12 100644
--- a/chrome/locale/en-US/zotero/preferences.dtd
+++ b/chrome/locale/en-US/zotero/preferences.dtd
@@ -83,7 +83,6 @@
 <!ENTITY zotero.preferences.sync.reset.resetFileSyncHistory.desc  "Compare all attachment files with the storage service">
 <!ENTITY zotero.preferences.sync.reset								"Reset">
 <!ENTITY zotero.preferences.sync.reset.button						"Reset…">
-<!ENTITY zotero.preferences.sync.toggle							"Toggle">
 
 
 <!ENTITY zotero.preferences.prefpane.search				"Search">