diff --git a/types/react-native/index.d.ts b/types/react-native/index.d.ts
index 1faa31da8f..01b7651dec 100644
--- a/types/react-native/index.d.ts
+++ b/types/react-native/index.d.ts
@@ -3652,7 +3652,7 @@ export interface FlatListStatic<ItemT> extends React.ComponentClass<FlatListProp
      * such that viewPosition 0 places it at the top, 1 at the bottom, and 0.5 centered in the middle.
      * Cannot scroll to locations outside the render window without specifying the getItemLayout prop.
      */
-    scrollToIndex: (params: { animated?: boolean; index: number; viewOffset: number; viewPosition?: number }) => void;
+    scrollToIndex: (params: { animated?: boolean; index: number; viewOffset?: number; viewPosition?: number }) => void;
 
     /**
      * Requires linear scan through data - use `scrollToIndex` instead if possible.