diff --git a/cloudron.js b/cloudron.js
index 63f102c..01724b8 100644
--- a/cloudron.js
+++ b/cloudron.js
@@ -320,7 +320,7 @@ Cloudron.prototype._checkGraphs = function (targets, from) {
         res = request.get(this._origin + '/api/v1/cloudron/graphs').query(params).end();
         process.stdout.write('.');
         if (res.statusCode !== 200) continue;
-        if (!util.isArray(res.body) && res.body.length !== targets.length) continue;
+        if (!util.isArray(res.body) || res.body.length !== targets.length) continue;
 
         for (var j = 0; j < res.body.length; j++) {
             if (res.body[j].datapoints.length === 0) break; // no data