diff --git a/Libraries/LibWeb/IndexedDB/IDBDatabase.cpp b/Libraries/LibWeb/IndexedDB/IDBDatabase.cpp
index 99afae48d30..781136c3b35 100644
--- a/Libraries/LibWeb/IndexedDB/IDBDatabase.cpp
+++ b/Libraries/LibWeb/IndexedDB/IDBDatabase.cpp
@@ -136,6 +136,9 @@ WebIDL::ExceptionOr<GC::Ref<IDBObjectStore>> IDBDatabase::create_object_store(St
     //    If keyPath is not null, set the created object store's key path to keyPath.
     auto object_store = ObjectStore::create(realm, database, name, auto_increment, key_path);
 
+    // AD-HOC: Add newly created object store to this's object store set.
+    add_to_object_store_set(object_store);
+
     // 10. Return a new object store handle associated with store and transaction.
     return IDBObjectStore::create(realm, object_store, *transaction);
 }
diff --git a/Libraries/LibWeb/IndexedDB/IDBDatabase.h b/Libraries/LibWeb/IndexedDB/IDBDatabase.h
index e83e0ad142b..d2127fcfc97 100644
--- a/Libraries/LibWeb/IndexedDB/IDBDatabase.h
+++ b/Libraries/LibWeb/IndexedDB/IDBDatabase.h
@@ -53,6 +53,7 @@ public:
     [[nodiscard]] ConnectionState state() const { return m_state; }
     [[nodiscard]] GC::Ref<Database> associated_database() { return m_associated_database; }
     [[nodiscard]] ReadonlySpan<GC::Ref<ObjectStore>> object_store_set() { return m_object_store_set; }
+    void add_to_object_store_set(GC::Ref<ObjectStore> object_store) { m_object_store_set.append(object_store); }
     void remove_from_object_store_set(GC::Ref<ObjectStore> object_store)
     {
         m_object_store_set.remove_first_matching([&](auto& entry) { return entry == object_store; });