diff --git a/types/json2csv/JSON2CSVBase.d.ts b/types/json2csv/JSON2CSVBase.d.ts
index 165497b4c8..d65a3cc297 100644
--- a/types/json2csv/JSON2CSVBase.d.ts
+++ b/types/json2csv/JSON2CSVBase.d.ts
@@ -10,9 +10,9 @@ export declare namespace json2csv {
     }
 
     export interface Options<T> {
-        fields?: (string | FieldInfo<T>);
+        fields?: Array<string | FieldInfo<T>>;
         ndjson?: boolean;
-        unwind?: string | string[];
+        unwind?: string | Array<string>;
         flatten?: boolean;
         defaultValue?: string;
         quote?: string;
diff --git a/types/json2csv/json2csv-tests.ts b/types/json2csv/json2csv-tests.ts
index 566cc06cee..67c46cd1c3 100644
--- a/types/json2csv/json2csv-tests.ts
+++ b/types/json2csv/json2csv-tests.ts
@@ -17,9 +17,27 @@ parse({});
 parse([]);
 parse({}, {});
 
+interface Car {
+    car: string;
+    price: number;
+}
+
 new Parser();
 const parser: Parser<ExampleObj> = new Parser({});
 s = parser.parse({ str: '', num: 1, obj: {} });
+
+const opts: json2csv.Options<Car> = {
+    fields: [{
+        label: 'Car Name',
+        value: 'car'
+    }, {
+        label: 'Price USD',
+        value: 'price'
+    }]
+};
+
+const json2csvParser = new Parser<Car>(opts);
+
 parser.parse([]);
 const transform: Transform<ExampleObj> = new Transform<ExampleObj>({ quote: '' });
 const nodeTransform: NodeTransform = transform;