diff --git a/chrome/locale/en-US/zotero/zotero.properties b/chrome/locale/en-US/zotero/zotero.properties
index 2e7e01b968..ea8a12ea09 100644
--- a/chrome/locale/en-US/zotero/zotero.properties
+++ b/chrome/locale/en-US/zotero/zotero.properties
@@ -592,8 +592,8 @@ ingester.lookup.performing		= Performing Lookup…
 ingester.lookup.error			= An error occurred while performing lookup for this item.
 
 findPDF.searchingForAvailablePDFs = Searching for available PDFs…
-findPDF.checkingItems = Checking %S item;Checking %S items
-findPDF.pdfsAdded = %S PDF added;%S PDFs added
+findPDF.checkingItems = Checking %1$S item;Checking %1$S items
+findPDF.pdfsAdded = %1$S PDF added;%1$S PDFs added
 findPDF.openAccessPDF = Open-Access PDF
 findPDF.pdfWithMethod = PDF (%S)
 findPDF.noPDFsFound = No PDFs found