diff --git a/lib/activitypub/federate.ts b/lib/activitypub/federate.ts
index 23f78aa..a4f199a 100644
--- a/lib/activitypub/federate.ts
+++ b/lib/activitypub/federate.ts
@@ -60,7 +60,7 @@ async function cacheActor(actorObject: ActorObject) {
 	function getIconUrl(icon: string | object): string {
 		return icon instanceof String ? icon : (icon as any).url;
 	}
-	const iconURL: string = actorObject.icon instanceof Array ? getIconUrl(actorObject.icon[0]) : getIconUrl(actorObject.icon);
+	const iconURL = !actorObject.icon ? null : actorObject.icon instanceof Array ? getIconUrl(actorObject.icon[0]) : getIconUrl(actorObject.icon);
 	const actor = new Actor();
 	actor.id = actorObject.id;
 	actor.actorObject = actorObject;