diff --git a/chrome/content/zotero/xpcom/translation/translate.js b/chrome/content/zotero/xpcom/translation/translate.js
index a12c9e63b..e3e4e9b6d 100644
--- a/chrome/content/zotero/xpcom/translation/translate.js
+++ b/chrome/content/zotero/xpcom/translation/translate.js
@@ -2285,7 +2285,8 @@ Zotero.Translate.IO._RDFSandbox.prototype = {
 		"getArcsOut":"r",
 		"getSources":"r",
 		"getTargets":"r",
-		"getStatementsMatching":"r"
+		"getStatementsMatching":"r",
+		"serialize":"r"
 	},
 	
 	/**