diff --git a/js/actions/api-cluster.js b/js/actions/api-cluster.js
index 9d547c5aed..b61d855253 100644
--- a/js/actions/api-cluster.js
+++ b/js/actions/api-cluster.js
@@ -567,7 +567,7 @@ actions.defineHttp({
       return;
     }
     try {
-      var r = internal.testPort("tcp://0.0.0.0:"+port);
+      var r = internal.testPort("tcp://0.0.0.0:" + port);
       res.responseCode = actions.HTTP_OK;
       res.contentType = "application/json; charset=utf-8";
       res.body = JSON.stringify(r);
diff --git a/js/server/modules/org/arangodb/cluster/planner.js b/js/server/modules/org/arangodb/cluster/planner.js
index f5fe2be28e..d2524d8b55 100644
--- a/js/server/modules/org/arangodb/cluster/planner.js
+++ b/js/server/modules/org/arangodb/cluster/planner.js
@@ -140,10 +140,10 @@ PortFinder.prototype.next = function () {
       }
     }
     // Check that port is available:
-    if (!this.dispatcher.avoidPorts.hasOwnProperty(this.port)) {
+    if (! this.dispatcher.avoidPorts.hasOwnProperty(this.port)) {
       var available = true;
       if (this.dispatcher.endpoint === "tcp://localhost:") {
-        available = testPort("tcp://0.0.0.0:"+this.port);
+        available = testPort("tcp://0.0.0.0:" + this.port);
       }
       else {
         var url = endpointToURL(this.dispatcher.endpoint) +