diff --git a/bt5/erp5_officejs/PathTemplateItem/web_page_module/gadget_field_graph_echarts_js.js b/bt5/erp5_officejs/PathTemplateItem/web_page_module/gadget_field_graph_echarts_js.js
index 5df9112b9330f6fa1ea639130486ff1bba4483fc..f9839d3849551e29ea1d3fa14264f5cda8ad5c2d 100644
--- a/bt5/erp5_officejs/PathTemplateItem/web_page_module/gadget_field_graph_echarts_js.js
+++ b/bt5/erp5_officejs/PathTemplateItem/web_page_module/gadget_field_graph_echarts_js.js
@@ -175,9 +175,9 @@
 
       this.listenToClickEventOnTheChart(chart);
       // XXX 
-      window.onresize = function () {
+      window.addEventListener("resize", function () {
         chart.resize();
-      };
+      }, {passive: true});
 
       gadget.property_dict.chart = chart;
     })