diff --git a/event.ts b/event.ts
index 6e4b538..3bbcbde 100644
--- a/event.ts
+++ b/event.ts
@@ -59,6 +59,7 @@ export function getEventHash(event: Event): string {
 }
 
 export function validateEvent(event: Event): boolean {
+  if (typeof event !== 'object') return false
   if (typeof event.content !== 'string') return false
   if (typeof event.created_at !== 'number') return false
   if (typeof event.pubkey !== 'string') return false