diff --git a/highcharts/highcharts.d.ts b/highcharts/highcharts.d.ts
index e135847103..8bfa8d9441 100644
--- a/highcharts/highcharts.d.ts
+++ b/highcharts/highcharts.d.ts
@@ -960,7 +960,7 @@ interface HighchartsOptions {
     subtitle?: HighchartsSubtitleOptions;
     title?: HighchartsTitleOptions;
     tooltip?: HighchartsTooltipOptions;
-    xAxis?: HighchartsAxisOptions[];
+    xAxis?: HighchartsAxisOptions;
     yAxis?: HighchartsAxisOptions[];
 }