diff --git a/chrome/content/zotero/xpcom/storage/webdav.js b/chrome/content/zotero/xpcom/storage/webdav.js
index 6e898f345f..e6a4c47a8b 100644
--- a/chrome/content/zotero/xpcom/storage/webdav.js
+++ b/chrome/content/zotero/xpcom/storage/webdav.js
@@ -84,7 +84,7 @@ Zotero.Sync.Storage.Mode.WebDAV.prototype = {
 		var loginManager = Components.classes["@mozilla.org/login-manager;1"]
 								.getService(Components.interfaces.nsILoginManager);
 		
-		var logins = loginManager.findLogins({}, this._loginManagerHost, null, this._loginManagerRealm);
+		var logins = loginManager.findLogins(this._loginManagerHost, null, this._loginManagerRealm);
 		// Find user from returned array of nsILoginInfo objects
 		for (var i = 0; i < logins.length; i++) {
 			if (logins[i].username == username) {
@@ -93,7 +93,7 @@ Zotero.Sync.Storage.Mode.WebDAV.prototype = {
 		}
 		
 		// Pre-4.0.28.5 format, broken for findLogins and removeLogin in Fx41
-		logins = loginManager.findLogins({}, "chrome://zotero", "", null);
+		logins = loginManager.findLogins("chrome://zotero", "", null);
 		for (var i = 0; i < logins.length; i++) {
 			if (logins[i].username == username
 					&& logins[i].formSubmitURL == "Zotero Storage Server") {
@@ -120,7 +120,7 @@ Zotero.Sync.Storage.Mode.WebDAV.prototype = {
 		
 		var loginManager = Components.classes["@mozilla.org/login-manager;1"]
 								.getService(Components.interfaces.nsILoginManager);
-		var logins = loginManager.findLogins({}, this._loginManagerHost, null, this._loginManagerRealm);
+		var logins = loginManager.findLogins(this._loginManagerHost, null, this._loginManagerRealm);
 		for (var i = 0; i < logins.length; i++) {
 			Zotero.debug('Clearing WebDAV passwords');
 			if (logins[i].httpRealm == this._loginManagerRealm) {
@@ -130,7 +130,7 @@ Zotero.Sync.Storage.Mode.WebDAV.prototype = {
 		}
 		
 		// Pre-4.0.28.5 format, broken for findLogins and removeLogin in Fx41
-		logins = loginManager.findLogins({}, this._loginManagerHost, "", null);
+		logins = loginManager.findLogins(this._loginManagerHost, "", null);
 		for (var i = 0; i < logins.length; i++) {
 			Zotero.debug('Clearing old WebDAV passwords');
 			if (logins[i].formSubmitURL == "Zotero Storage Server") {
diff --git a/chrome/content/zotero/xpcom/sync/syncLocal.js b/chrome/content/zotero/xpcom/sync/syncLocal.js
index f6bc512fb4..9590732a56 100644
--- a/chrome/content/zotero/xpcom/sync/syncLocal.js
+++ b/chrome/content/zotero/xpcom/sync/syncLocal.js
@@ -400,7 +400,6 @@ Zotero.Sync.Data.Local = {
 	_getAPIKeyLoginInfo: function () {
 		try {
 			var logins = Services.logins.findLogins(
-				{},
 				this._loginManagerHost,
 				null,
 				this._loginManagerRealm
@@ -449,7 +448,7 @@ Zotero.Sync.Data.Local = {
 		var loginManager = Components.classes["@mozilla.org/login-manager;1"]
 			.getService(Components.interfaces.nsILoginManager);
 		try {
-			var logins = loginManager.findLogins({}, loginManagerHost, null, loginManagerRealm);
+			var logins = loginManager.findLogins(loginManagerHost, null, loginManagerRealm);
 		}
 		catch (e) {
 			Zotero.logError(e);
@@ -464,7 +463,7 @@ Zotero.Sync.Data.Local = {
 		}
 		
 		// Pre-4.0.28.5 format, broken for findLogins and removeLogin in Fx41,
-		var logins = loginManager.findLogins({}, loginManagerHost, "", null);
+		var logins = loginManager.findLogins(loginManagerHost, "", null);
 		for (let i = 0; i < logins.length; i++) {
 			if (logins[i].username == username
 					&& logins[i].formSubmitURL == "Zotero Sync Server") {
@@ -484,7 +483,7 @@ Zotero.Sync.Data.Local = {
 		var loginManager = Components.classes["@mozilla.org/login-manager;1"]
 			.getService(Components.interfaces.nsILoginManager);
 		try {
-			var logins = loginManager.findLogins({}, loginManagerHost, null, loginManagerRealm);
+			var logins = loginManager.findLogins(loginManagerHost, null, loginManagerRealm);
 		}
 		catch (e) {
 			Zotero.logError(e);