diff --git a/apps/files_external/js/dropbox.js b/apps/files_external/js/dropbox.js
index c1e386407089e204ef0fd00d838f498591c4e55a..a9a3155e677086a7bc2d0ec0d98662348c60a9ce 100644
--- a/apps/files_external/js/dropbox.js
+++ b/apps/files_external/js/dropbox.js
@@ -1,6 +1,6 @@
 $(document).ready(function() {
 
-	$('#externalStorage tbody tr.OC_Filestorage_Dropbox').each(function() {
+	$('#externalStorage tbody tr.\\\\OC\\\\Files\\\\Storage\\\\Dropbox').each(function() {
 		var configured = $(this).find('[data-parameter="configured"]');
 		if ($(configured).val() == 'true') {
 			$(this).find('.configuration input').attr('disabled', 'disabled');
@@ -38,7 +38,7 @@ $(document).ready(function() {
 
 	$('#externalStorage tbody tr input').live('keyup', function() {
 		var tr = $(this).parent().parent();
-		if ($(tr).hasClass('OC_Filestorage_Dropbox') && $(tr).find('[data-parameter="configured"]').val() != 'true') {
+		if ($(tr).hasClass('\\\\OC\\\\Files\\\\Storage\\\\Dropbox') && $(tr).find('[data-parameter="configured"]').val() != 'true') {
 			var config = $(tr).find('.configuration');
 			if ($(tr).find('.mountPoint input').val() != '' && $(config).find('[data-parameter="app_key"]').val() != '' && $(config).find('[data-parameter="app_secret"]').val() != '') {
 				if ($(tr).find('.dropbox').length == 0) {
diff --git a/apps/files_external/js/google.js b/apps/files_external/js/google.js
index 0b3c314eb5de5f309b466d8cf6c1f29c381ec0fc..7d759d13da476272873085ed793938153516bbfc 100644
--- a/apps/files_external/js/google.js
+++ b/apps/files_external/js/google.js
@@ -1,6 +1,6 @@
 $(document).ready(function() {
 
-	$('#externalStorage tbody tr.OC_Filestorage_Google').each(function() {
+	$('#externalStorage tbody tr.\\\\OC\\\\Files\\\\Storage\\\\Google').each(function() {
 		var configured = $(this).find('[data-parameter="configured"]');
 		if ($(configured).val() == 'true') {
 			$(this).find('.configuration')
@@ -34,7 +34,8 @@ $(document).ready(function() {
 	});
 
 	$('#externalStorage tbody tr').live('change', function() {
-		if ($(this).hasClass('OC_Filestorage_Google') && $(this).find('[data-parameter="configured"]').val() != 'true') {
+		console.log('hello');
+		if ($(this).hasClass('\\\\OC\\\\Files\\\\Storage\\\\Google') && $(this).find('[data-parameter="configured"]').val() != 'true') {
 			if ($(this).find('.mountPoint input').val() != '') {
 				if ($(this).find('.google').length == 0) {
 					$(this).find('.configuration').append('<a class="button google">'+t('files_external', 'Grant access')+'</a>');
@@ -45,7 +46,7 @@ $(document).ready(function() {
 
 	$('#externalStorage tbody tr .mountPoint input').live('keyup', function() {
 		var tr = $(this).parent().parent();
-		if ($(tr).hasClass('OC_Filestorage_Google') && $(tr).find('[data-parameter="configured"]').val() != 'true' && $(tr).find('.google').length > 0) {
+		if ($(tr).hasClass('\\\\OC\\\\Files\\\\Storage\\\\Google') && $(tr).find('[data-parameter="configured"]').val() != 'true' && $(tr).find('.google').length > 0) {
 			if ($(this).val() != '') {
 				$(tr).find('.google').show();
 			} else {
diff --git a/apps/files_external/js/settings.js b/apps/files_external/js/settings.js
index 0dc983ca8ad0199680611fdd46ec516be79a7e6f..6cbc2180084f660ccd2aeba46a3f4a62a1441c57 100644
--- a/apps/files_external/js/settings.js
+++ b/apps/files_external/js/settings.js
@@ -100,7 +100,7 @@ $(document).ready(function() {
 						td.append('<input type="text" data-parameter="'+parameter+'" placeholder="'+placeholder+'" />');
 					}
 				});
-				if (parameters['custom'] && $('#externalStorage tbody tr.'+backendClass).length == 1) {
+				if (parameters['custom'] && $('#externalStorage tbody tr.'+backendClass.replace(/\\/g, '\\\\')).length == 1) {
 					OC.addScript('files_external', parameters['custom']);
 				}
 				return false;