diff --git a/appstore.js b/appstore.js
index 9be0376..be6402a 100644
--- a/appstore.js
+++ b/appstore.js
@@ -156,7 +156,7 @@ AppStore.prototype.getManifest = function (appId, version) {
 };
 
 AppStore.prototype.restore = function (boxId, backupId) {
-    var res = request.post(this._origin + '/api/v1/cloudrons/' + boxId + '/restore/' + backupId).query({ accessToken: this._credentials.accessToken }).end();
+    var res = request.post(this._origin + '/api/v1/cloudrons/' + boxId + '/restore/' + encodeURIComponent(backupId)).query({ accessToken: this._credentials.accessToken }).end();
     common.verifyResponse2xx(res, 'Could not restore cloudron');
 };