diff --git a/highcharts/highcharts-tests.ts b/highcharts/highcharts-tests.ts
index 9918df953..f163f2a30 100644
--- a/highcharts/highcharts-tests.ts
+++ b/highcharts/highcharts-tests.ts
@@ -112,9 +112,7 @@ var chart2 = new Highcharts.Chart({
 });
 
 chart1.exportChart(null, {
-    chart: {
-        backgroundColor: '#FFFFFF'
-    }
+    backgroundColor: '#FFFFFF'
 });