diff --git a/core/src/plugins/core.tasks/js/react/PydioTasks.js b/core/src/plugins/core.tasks/js/react/PydioTasks.js
index 9b9ee005f8..1c7f55a5cf 100644
--- a/core/src/plugins/core.tasks/js/react/PydioTasks.js
+++ b/core/src/plugins/core.tasks/js/react/PydioTasks.js
@@ -211,7 +211,7 @@
                     let t = JSON.parse(data);
                     if( t instanceof Object && t.id){
                         let taskObject = new Task(t);
-                        if (this._tasksList == null){
+                        if (this._tasksList === undefined){
                             this._tasksList = new Map();
                         }
                         this._tasksList.set(t.id, taskObject);