diff --git a/types/dropbox-chooser/dropbox-chooser-tests.ts b/types/dropbox-chooser/dropbox-chooser-tests.ts
index f0930733f8..e998bad7bf 100644
--- a/types/dropbox-chooser/dropbox-chooser-tests.ts
+++ b/types/dropbox-chooser/dropbox-chooser-tests.ts
@@ -1,7 +1,7 @@
 // Tests for Dropbox Chooser DefinitelyTyped TS definitions
 
-const options: DropboxChooserOptions = {
-  success: (files: ReadonlyArray<DropboxChooserFile>) => {
+const options: Dropbox.ChooserOptions = {
+  success: (files: ReadonlyArray<Dropbox.ChooserFile>) => {
     console.log('Success, selected files were:', files);
   },
 };
@@ -9,7 +9,7 @@ const options: DropboxChooserOptions = {
 const Dropbox = window.Dropbox!;
 Dropbox.choose(options);
 
-const sampleFile: DropboxChooserFile = {
+const sampleFile: Dropbox.ChooserFile = {
   id: 'SAMPLE_ID',
   name: 'HelloBox.jpg',
   link: 'http://localhost/1.png',
diff --git a/types/dropbox-chooser/index.d.ts b/types/dropbox-chooser/index.d.ts
index 8c9db6f72d..c5fd8a6cd6 100644
--- a/types/dropbox-chooser/index.d.ts
+++ b/types/dropbox-chooser/index.d.ts
@@ -4,13 +4,13 @@
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 declare namespace Dropbox {
-    interface DropboxChooser {
+    interface Chooser {
       choose(options: ChooserOptions): void;
     }
 
     interface ChooserOptions {
-        // alled when a user selects an item in the Chooser
-        success(files: ReadonlyArray<File>): void;
+        // called when a user selects an item in the Chooser
+        success(files: ReadonlyArray<ChooserFile>): void;
 
         // called when the user closes the dialog without selecting a file
         cancel?(): void;
@@ -31,7 +31,7 @@ declare namespace Dropbox {
         sizeLimit?: number;
     }
 
-    interface File {
+    interface ChooserFile {
         // Unique ID for the file, compatible with Dropbox API v2.
         id: string;
 
@@ -55,12 +55,12 @@ declare namespace Dropbox {
         // whether or not the file is actually a directory
         isDir: boolean;
     }
-}
 
-type DropboxChooser = Dropbox.DropboxChooser;
-type DropboxChooserOptions = Dropbox.ChooserOptions;
-type DropboxChooserFile = Dropbox.File;
+    // Refer to "Handling the response" section of: https://www.dropbox.com/developers/chooser
+    type ChooserFileBoundingBox = 75 | 256 | 800 | 1280 | 2048;
+    type ChooserFileMode = 'fit' | 'crop' | 'fit_one_and_overflow';
+}
 
 interface Window {
-    Dropbox?: DropboxChooser;
+    Dropbox?: Dropbox.Chooser;
 }