diff --git a/crates/ruma-common/src/events/sticker.rs b/crates/ruma-common/src/events/sticker.rs
index a79ab4f4..45a5f187 100644
--- a/crates/ruma-common/src/events/sticker.rs
+++ b/crates/ruma-common/src/events/sticker.rs
@@ -16,6 +16,11 @@ use crate::{events::room::ImageInfo, MxcUri};
 /// The content of an `m.sticker` event.
 ///
 /// A sticker message.
+///
+/// With the `unstable-msc3552` feature, this type also contains the transitional extensible events
+/// format. See the documentation of the [`message`] module for more information.
+///
+/// [`message`]: super::message
 #[derive(Clone, Debug, Deserialize, Serialize, EventContent)]
 #[cfg_attr(not(feature = "unstable-exhaustive-types"), non_exhaustive)]
 #[ruma_event(type = "m.sticker", kind = MessageLike)]