diff --git a/crates/ruma-events/src/room/canonical_alias.rs b/crates/ruma-events/src/room/canonical_alias.rs
index c964984a..0e54af6e 100644
--- a/crates/ruma-events/src/room/canonical_alias.rs
+++ b/crates/ruma-events/src/room/canonical_alias.rs
@@ -10,7 +10,7 @@ use crate::StateEvent;
 pub type CanonicalAliasEvent = StateEvent<CanonicalAliasEventContent>;
 
 /// The payload for `CanonicalAliasEvent`.
-#[derive(Clone, Debug, Deserialize, Serialize, StateEventContent)]
+#[derive(Clone, Debug, Default, Deserialize, Serialize, StateEventContent)]
 #[cfg_attr(not(feature = "unstable-exhaustive-types"), non_exhaustive)]
 #[ruma_event(type = "m.room.canonical_alias")]
 pub struct CanonicalAliasEventContent {