diff --git a/nostr/event.py b/nostr/event.py
index eab1042..c213d5e 100644
--- a/nostr/event.py
+++ b/nostr/event.py
@@ -59,7 +59,7 @@ def id(self) -> str:
         # Always recompute the id to reflect the up-to-date state of the Event
         assert self.public_key, "Event public key is missing"
         assert self.created_at, "Event created_at is missing"
-        assert self.content, "Event content is missing"
+        assert self.content is not None, "Event content is missing"
         return Event.compute_id(
             self.public_key, self.created_at, self.kind, self.tags, self.content
         )