diff --git a/chrome/content/zotero/xpcom/translation/translate.js b/chrome/content/zotero/xpcom/translation/translate.js
index 2eb5e34ea..d1b5c69c9 100644
--- a/chrome/content/zotero/xpcom/translation/translate.js
+++ b/chrome/content/zotero/xpcom/translation/translate.js
@@ -979,6 +979,13 @@ Zotero.Translate.Web.prototype.complete = function(returnValue, error) {
 	
 	// Report translaton failure if we failed
 	if(this._currentState == "translate" && errorString && this.translator[0].inRepository && Zotero.Prefs.get("reportTranslationFailure")) {
+		// Don't report failure if in private browsing mode
+		var pbs = Components.classes["@mozilla.org/privatebrowsing;1"]
+					.getService(Components.interfaces.nsIPrivateBrowsingService);
+		if (pbs.privateBrowsingEnabled) {
+			return;
+		}
+		
 		var postBody = "id=" + encodeURIComponent(this.translator[0].translatorID) +
 					   "&lastUpdated=" + encodeURIComponent(this.translator[0].lastUpdated) +
 					   "&diagnostic=" + encodeURIComponent(Zotero.getSystemInfo()) +