diff --git a/swarmlab-app/src/run/app.js b/swarmlab-app/src/run/app.js
index 62ab1cf..3b19b39 100755
--- a/swarmlab-app/src/run/app.js
+++ b/swarmlab-app/src/run/app.js
@@ -462,7 +462,7 @@ function onCollection(err, collection) {
             var resob =  {}
             await pubClient.get(pathfileval, function(err, object) {
                 console.log('----------------' + err + '<<<<<<<<<<<<<<<<<<<<<<' + object);
-                if(err == null){
+                if(object){
                     indexupdate = "no"
                 }else{
                     console.log('redis '+JSON.stringify(object));