diff --git a/projects/planner/src/app/diff/profilechart/diff-profilechart.component.ts b/projects/planner/src/app/diff/profilechart/diff-profilechart.component.ts
index d0c5fb0b..ac9f5edb 100644
--- a/projects/planner/src/app/diff/profilechart/diff-profilechart.component.ts
+++ b/projects/planner/src/app/diff/profilechart/diff-profilechart.component.ts
@@ -93,7 +93,9 @@ export class ProfileDifferenceChartComponent extends Streamed implements OnInit
     }
 
     private plotCharts(): void {
-        this.plotter.plotCharts(this.profileA.totalDuration);
+        const totalDuration = this.profileA.totalDuration > this.profileB.totalDuration ?
+            this.profileA.totalDuration : this.profileB.totalDuration;
+        this.plotter.plotCharts(totalDuration);
     }
 
     private hookChartEvents(): void {