diff --git a/packages/system/src/nostr-link.ts b/packages/system/src/nostr-link.ts
index b1d9380a..b34d3ea6 100644
--- a/packages/system/src/nostr-link.ts
+++ b/packages/system/src/nostr-link.ts
@@ -53,7 +53,7 @@ export class NostrLink implements ToNostrEventTag {
   }
 
   toEventTag(marker?: string) {
-    const relayEntry = this.relays ? [this.relays[0]] : [];
+    const relayEntry = this.relays?.at(0) ? [this.relays[0]] : [];
 
     if (marker) {
       if (relayEntry.length === 0) {
diff --git a/packages/worker-relay/src/types.ts b/packages/worker-relay/src/types.ts
index ae8bccc6..e689cf16 100644
--- a/packages/worker-relay/src/types.ts
+++ b/packages/worker-relay/src/types.ts
@@ -25,6 +25,7 @@ export interface NostrEvent {
   tags: Array<Array<string>>;
   content: string;
   sig: string;
+  relays?: Array<string>;
 }
 
 export type ReqCommand = ["REQ", id: string, ...filters: Array<ReqFilter>];