diff --git a/packages/docusaurus-theme-common/src/utils/storageUtils.ts b/packages/docusaurus-theme-common/src/utils/storageUtils.ts
index a8c8825b2267..491088f0416f 100644
--- a/packages/docusaurus-theme-common/src/utils/storageUtils.ts
+++ b/packages/docusaurus-theme-common/src/utils/storageUtils.ts
@@ -229,8 +229,8 @@ export function useStorageSlot(
   const currentValue = useSyncExternalStore(
     listen,
     () => {
-      // TODO this check should be useless after React 18
-      if (typeof window === 'undefined') {
+      // react-test-renderer (deprecated) never call getServerSnapshot() :/
+      if (process.env.NODE_ENV === 'test') {
         return null;
       }
       return storageSlot.get();