diff --git a/apps/files_external/js/settings.js b/apps/files_external/js/settings.js
index ae3aef4ef3..232d5b96d5 100644
--- a/apps/files_external/js/settings.js
+++ b/apps/files_external/js/settings.js
@@ -15,6 +15,10 @@ var MOUNT_OPTIONS_DROPDOWN_TEMPLATE =
 	'<div class="drop dropdown mountOptionsDropdown">' +
 	// FIXME: options are hard-coded for now
 	'	<div class="optionRow">' +
+	'		<label for="mountOptionsEncrypt">{{t "files_external" "Enable encryption"}}</label>' +
+	'		<input id="mountOptionsEncrypt" name="encrypt" type="checkbox" value="true" checked="checked"/>' +
+	'	</div>' +
+	'	<div class="optionRow">' +
 	'		<label for="mountOptionsPreviews">{{t "files_external" "Enable previews"}}</label>' +
 	'		<input id="mountOptionsPreviews" name="previews" type="checkbox" value="true" checked="checked"/>' +
 	'	</div>' +
@@ -422,8 +426,9 @@ MountOptionsDropdown.prototype = {
 	 *
 	 * @param {Object} $container container
 	 * @param {Object} mountOptions mount options
+	 * @param {Array} enabledOptions enabled mount options
 	 */
-	show: function($container, mountOptions) {
+	show: function($container, mountOptions, enabledOptions) {
 		if (MountOptionsDropdown._last) {
 			MountOptionsDropdown._last.hide();
 		}
@@ -438,7 +443,7 @@ MountOptionsDropdown.prototype = {
 		this.$el = $el;
 		$el.addClass('hidden');
 
-		this.setOptions(mountOptions);
+		this.setOptions(mountOptions, enabledOptions);
 
 		this.$el.appendTo($container);
 		MountOptionsDropdown._last = this;
@@ -484,8 +489,9 @@ MountOptionsDropdown.prototype = {
 	 * Sets the mount options to the dropdown controls
 	 *
 	 * @param {Object} options mount options
+	 * @param {Array} enabledOptions enabled mount options
 	 */
-	setOptions: function(options) {
+	setOptions: function(options, enabledOptions) {
 		var $el = this.$el;
 		_.each(options, function(value, key) {
 			var $optionEl = $el.find('input, select').filterAttr('name', key);
@@ -498,6 +504,13 @@ MountOptionsDropdown.prototype = {
 				$optionEl.val(value);
 			}
 		});
+		$el.find('.optionRow').each(function(i, row){
+			var $row = $(row);
+			var optionId = $row.find('input, select').attr('name');
+			if (enabledOptions.indexOf(optionId) === -1) {
+				$row.hide();
+			}
+		});
 	}
 };
 
@@ -554,6 +567,8 @@ MountConfigListView.prototype = {
 	 */
 	_allBackends: null,
 
+	_encryptionEnabled: false,
+
 	/**
 	 * @param {Object} $el DOM object containing the list
 	 * @param {Object} [options]
@@ -573,6 +588,8 @@ MountConfigListView.prototype = {
 			this._userListLimit = options.userListLimit;
 		}
 
+		this._encryptionEnabled = options.encryptionEnabled;
+
 		// read the backend config that was carefully crammed
 		// into the data-configurations attribute of the select
 		this._allBackends = this.$el.find('.selectBackend').data('configurations');
@@ -935,8 +952,11 @@ MountConfigListView.prototype = {
 		var storage = this.getStorageConfig($tr);
 		var $toggle = $tr.find('.mountOptionsToggle');
 		var dropDown = new MountOptionsDropdown();
-		dropDown.show($toggle, storage.mountOptions || []);
-
+		var enabledOptions = ['previews', 'filesystem_check_changes'];
+		if (this._encryptionEnabled) {
+			enabledOptions.push('encrypt');
+		}
+		dropDown.show($toggle, storage.mountOptions || [], enabledOptions);
 		$('body').on('mouseup.mountOptionsDropdown', function(event) {
 			var $target = $(event.target);
 			if ($toggle.has($target).length) {
@@ -963,7 +983,10 @@ MountConfigListView.prototype = {
 };
 
 $(document).ready(function() {
-	var mountConfigListView = new MountConfigListView($('#externalStorage'));
+	var encryptionEnabled = JSON.parse($('#files_external').attr('data-encryption-enabled'));
+	var mountConfigListView = new MountConfigListView($('#externalStorage'), {
+		encryptionEnabled: encryptionEnabled
+	});
 
 	$('#sslCertificate').on('click', 'td.remove>img', function() {
 		var $tr = $(this).closest('tr');
diff --git a/apps/files_external/personal.php b/apps/files_external/personal.php
index e09f0f803a..b2ab32411f 100644
--- a/apps/files_external/personal.php
+++ b/apps/files_external/personal.php
@@ -48,6 +48,7 @@ if (!$hasId) {
 }
 
 $tmpl = new OCP\Template('files_external', 'settings');
+$tmpl->assign('encryptionEnabled', \OC::$server->getEncryptionManager()->isEnabled());
 $tmpl->assign('isAdminPage', false);
 $tmpl->assign('mounts', $mounts);
 $tmpl->assign('dependencies', OC_Mount_Config::checkDependencies());
diff --git a/apps/files_external/settings.php b/apps/files_external/settings.php
index ee4982a9ad..daf205d3d5 100644
--- a/apps/files_external/settings.php
+++ b/apps/files_external/settings.php
@@ -68,6 +68,7 @@ if (!$hasId) {
 }
 
 $tmpl = new OCP\Template('files_external', 'settings');
+$tmpl->assign('encryptionEnabled', \OC::$server->getEncryptionManager()->isEnabled());
 $tmpl->assign('isAdminPage', true);
 $tmpl->assign('mounts', $mounts);
 $tmpl->assign('backends', $backends);
diff --git a/apps/files_external/templates/settings.php b/apps/files_external/templates/settings.php
index 967c59debe..b886c2e1b1 100644
--- a/apps/files_external/templates/settings.php
+++ b/apps/files_external/templates/settings.php
@@ -1,4 +1,4 @@
-<form id="files_external" class="section">
+<form id="files_external" class="section" data-encryption-enabled="<?php echo $_['encryptionEnabled']?'true': 'false'; ?>">
 	<h2><?php p($l->t('External Storage')); ?></h2>
 	<?php if (isset($_['dependencies']) and ($_['dependencies']<>'')) print_unescaped(''.$_['dependencies'].''); ?>
 	<table id="externalStorage" class="grid" data-admin='<?php print_unescaped(json_encode($_['isAdminPage'])); ?>'>
diff --git a/lib/base.php b/lib/base.php
index b441d5f192..98da75b61a 100644
--- a/lib/base.php
+++ b/lib/base.php
@@ -703,14 +703,18 @@ class OC {
 	private static function registerEncryptionWrapper() {
 		$enabled = self::$server->getEncryptionManager()->isEnabled();
 		if ($enabled) {
-			\OC\Files\Filesystem::addStorageWrapper('oc_encryption', function ($mountPoint, $storage) {
-				$parameters = array('storage' => $storage, 'mountPoint' => $mountPoint);
-				$manager = \OC::$server->getEncryptionManager();
-				$util = new \OC\Encryption\Util(new \OC\Files\View(), \OC::$server->getUserManager());
-				$user = \OC::$server->getUserSession()->getUser();
-				$logger = \OC::$server->getLogger();
-				$uid = $user ? $user->getUID() : null;
-				return new \OC\Files\Storage\Wrapper\Encryption($parameters, $manager,$util, $logger, $uid);
+			\OC\Files\Filesystem::addStorageWrapper('oc_encryption', function ($mountPoint, $storage, \OCP\Files\Mount\IMountPoint $mount) {
+				if($mount->getOption('encrypt', true)) {
+					$parameters = array('storage' => $storage, 'mountPoint' => $mountPoint);
+					$manager = \OC::$server->getEncryptionManager();
+					$util = new \OC\Encryption\Util(new \OC\Files\View(), \OC::$server->getUserManager());
+					$user = \OC::$server->getUserSession()->getUser();
+					$logger = \OC::$server->getLogger();
+					$uid = $user ? $user->getUID() : null;
+					return new \OC\Files\Storage\Wrapper\Encryption($parameters, $manager, $util, $logger, $uid);
+				} else {
+					return $storage;
+				}
 			});
 		}