diff --git a/code/addons/themes/src/preview.tsx b/code/addons/themes/src/preview.tsx
index 88b41773e9db..1ee39be54ed0 100644
--- a/code/addons/themes/src/preview.tsx
+++ b/code/addons/themes/src/preview.tsx
@@ -1,11 +1,7 @@
 import type { Renderer, ProjectAnnotations } from '@storybook/types';
 import { GLOBAL_KEY } from './constants';
 
-const preview: ProjectAnnotations<Renderer> = {
-  globals: {
-    // Required to make sure SB picks this up from URL params
-    [GLOBAL_KEY]: '',
-  },
+export const globals: ProjectAnnotations<Renderer>['globals'] = {
+  // Required to make sure SB picks this up from URL params
+  [GLOBAL_KEY]: '',
 };
-
-export default preview;