diff --git a/types/chart.js/index.d.ts b/types/chart.js/index.d.ts
index bfbe9fb31e..4d1546fdb3 100644
--- a/types/chart.js/index.d.ts
+++ b/types/chart.js/index.d.ts
@@ -130,7 +130,7 @@ declare namespace Chart {
     }
 
     interface ChartData {
-        labels?: string[] | string[][];
+        labels?: (string | string[])[];
         datasets?: ChartDataSets[];
     }