diff --git a/src/components/PlanningTool.jsx b/src/components/PlanningTool.jsx
index 1372971..4901e73 100644
--- a/src/components/PlanningTool.jsx
+++ b/src/components/PlanningTool.jsx
@@ -742,6 +742,12 @@ PlanningTool.defaultProps = {
       maximumDuration: false,
     }
   ],
+  milestones: [
+    {
+      label: '',
+      color: '#000',
+    }
+  ],
   popup: Popup,
 }
 export default PlanningTool
\ No newline at end of file