diff --git a/static/src/js/operation_graph.js b/static/src/js/operation_graph.js
index f791a755b31228e7902d15807f080f8d3344d1c2..13fbd0022fca79b23b6f5b8464f288783bbe6e74 100644
--- a/static/src/js/operation_graph.js
+++ b/static/src/js/operation_graph.js
@@ -55,10 +55,7 @@ odoo.define('enercoop_cdc.operation_graph', function (require) {
                             type: 'time',
                             time: {
                               // Luxon format string
-                              unit: unit,
-                              displayFormats: {
-                                'day': 'MM/DD/YYYY'
-                              }
+                              unit: unit
                             },
                             title: {
                               display: true,