diff --git a/chrome/content/zotero/xpcom/translation/translate.js b/chrome/content/zotero/xpcom/translation/translate.js
index cf4e96b1d..7341c61bb 100644
--- a/chrome/content/zotero/xpcom/translation/translate.js
+++ b/chrome/content/zotero/xpcom/translation/translate.js
@@ -1000,7 +1000,7 @@ Zotero.Translate.Web.prototype.complete = function(returnValue, error) {
 		var postBody = "id=" + encodeURIComponent(this.translator[0].translatorID) +
 					   "&lastUpdated=" + encodeURIComponent(this.translator[0].lastUpdated) +
 					   "&diagnostic=" + encodeURIComponent(Zotero.getSystemInfo()) +
-					   "&errorData=" + encodeURIComponent(errorData);
+					   "&errorData=" + encodeURIComponent(errorString);
 		Zotero.HTTP.doPost("http://www.zotero.org/repo/report", postBody);
 	}
 }