diff --git a/Libraries/LibWeb/IndexedDB/IDBObjectStore.cpp b/Libraries/LibWeb/IndexedDB/IDBObjectStore.cpp
index d7ac16cd8c3..6a05040553d 100644
--- a/Libraries/LibWeb/IndexedDB/IDBObjectStore.cpp
+++ b/Libraries/LibWeb/IndexedDB/IDBObjectStore.cpp
@@ -26,6 +26,9 @@ IDBObjectStore::IDBObjectStore(JS::Realm& realm, GC::Ref<ObjectStore> store, GC:
     , m_name(store->name())
 {
     transaction->add_to_scope(store);
+
+    // An object store handle has an index set, which is initialized to the set of indexes that reference the associated object store when the object store handle is created.
+    m_indexes = MUST(store->index_set().clone());
 }
 
 GC::Ref<IDBObjectStore> IDBObjectStore::create(JS::Realm& realm, GC::Ref<ObjectStore> store, GC::Ref<IDBTransaction> transaction)