diff --git a/chrome/content/zotero/xpcom/error.js b/chrome/content/zotero/xpcom/error.js
index 51af0eadbf..00972e2821 100644
--- a/chrome/content/zotero/xpcom/error.js
+++ b/chrome/content/zotero/xpcom/error.js
@@ -25,7 +25,7 @@
 
 
 Zotero.Error = function (message, error, data) {
-	this.name = "ZOTERO_ERROR";
+	this.name = "Zotero Error";
 	this.message = message;
 	this.data = data;
 	if (parseInt(error) == error) {
@@ -35,6 +35,8 @@ Zotero.Error = function (message, error, data) {
 		this.error = Zotero.Error["ERROR_" + error] ? Zotero.Error["ERROR_" + error] : 0;
 	}
 }
+Zotero.Error.prototype = new Error;
+
 
 Zotero.Error.ERROR_UNKNOWN = 0;
 Zotero.Error.ERROR_MISSING_OBJECT = 1;
diff --git a/chrome/content/zotero/xpcom/sync.js b/chrome/content/zotero/xpcom/sync.js
index 9ed9e9fca9..616d3b3737 100644
--- a/chrome/content/zotero/xpcom/sync.js
+++ b/chrome/content/zotero/xpcom/sync.js
@@ -2416,7 +2416,7 @@ Zotero.Sync.Server = new function () {
 	
 	
 	function _error(e, extraInfo, skipReload) {
-		if (e.name && e.name == 'ZOTERO_ERROR') {
+		if (e instanceof Zotero.Error) {
 			switch (e.error) {
 				case Zotero.Error.ERROR_MISSING_OBJECT:
 				case Zotero.Error.ERROR_FULL_SYNC_REQUIRED: