diff --git a/src/app/components/core/asset-readings/readings-graph/readings-graph.component.ts b/src/app/components/core/asset-readings/readings-graph/readings-graph.component.ts
index d8ed67fab..35095b70d 100644
--- a/src/app/components/core/asset-readings/readings-graph/readings-graph.component.ts
+++ b/src/app/components/core/asset-readings/readings-graph/readings-graph.component.ts
@@ -621,7 +621,6 @@ export class ReadingsGraphComponent implements OnDestroy {
           distribution: 'linear',
           type: 'time',
           time: {
-            unit: 'second',
             tooltipFormat: 'YYYY-MM-DD HH:mm:ss.SSS',
             displayFormats: {
               unit: 'second',