diff --git a/src/storages/hydrate.ts b/src/storages/hydrate.ts
index 405b196d..8d152f0b 100644
--- a/src/storages/hydrate.ts
+++ b/src/storages/hydrate.ts
@@ -17,7 +17,7 @@ async function hydrateEvents(opts: HydrateEventOpts): Promise<DittoEvent[]> {
     return events;
   }
 
-  for (const relation in relations) {
+  for (const relation of relations) {
     switch (relation) {
       case 'author':
         await hydrateAuthors({ events, storage, signal });