diff --git a/chrome/locale/en-US/zotero/zotero.properties b/chrome/locale/en-US/zotero/zotero.properties
index d7c9306a78..f1048be354 100644
--- a/chrome/locale/en-US/zotero/zotero.properties
+++ b/chrome/locale/en-US/zotero/zotero.properties
@@ -85,7 +85,6 @@ general.thanksForHelpingImprove = Thanks for helping to improve %S!
 general.describeProblem			= Briefly describe the problem:
 general.nMegabytes                 = %S MB
 general.item                       = Item
-general.pdf                        = PDF
 general.back                       = Back
 general.languages                  = Languages
 general.default                    = Default