diff --git a/crates/ruma-common/CHANGELOG.md b/crates/ruma-common/CHANGELOG.md
index e255e355..0d1ae4ce 100644
--- a/crates/ruma-common/CHANGELOG.md
+++ b/crates/ruma-common/CHANGELOG.md
@@ -19,6 +19,9 @@ Breaking changes:
 * Change `events::room` media types to use `Duration` where applicable
 * Move `prev_content` into `unsigned`
 * Rename `identifiers::Error` to `IdParseError`
+* Fix the `RoomMessageEventContent::*_reply_plain` methods that now return a
+  message with a `formatted_body`, according to the spec. Therefore, they only
+  accept `OriginalRoomMessageEvent`s like their HTML counterparts.
 
 Improvements:
 
diff --git a/crates/ruma-common/src/events/room/message.rs b/crates/ruma-common/src/events/room/message.rs
index 43449c2d..38cf839f 100644
--- a/crates/ruma-common/src/events/room/message.rs
+++ b/crates/ruma-common/src/events/room/message.rs
@@ -42,8 +42,6 @@ pub mod feedback;
 mod relation_serde;
 mod reply;
 
-pub use reply::ReplyBaseEvent;
-
 /// The content of an `m.room.message` event.
 ///
 /// This event is used when sending messages in a room.
@@ -105,28 +103,34 @@ impl RoomMessageEventContent {
     }
 
     /// Creates a plain text reply to a message.
+    ///
+    /// This constructor requires an [`OriginalRoomMessageEvent`] since it creates a permalink to
+    /// the previous message, for which the room ID is required. If you want to reply to an
+    /// [`OriginalSyncRoomMessageEvent`], you have to convert it first by calling
+    /// [`.into_full_event()`][crate::events::OriginalSyncMessageLikeEvent::into_full_event].
     pub fn text_reply_plain(
         reply: impl fmt::Display,
-        original_message: &impl ReplyBaseEvent,
+        original_message: &OriginalRoomMessageEvent,
     ) -> Self {
         let quoted = reply::get_plain_quote_fallback(original_message);
+        let quoted_html = reply::get_html_quote_fallback(original_message);
 
         let body = format!("{}\n\n{}", quoted, reply);
+        let html_body = format!("{}\n\n{}", quoted_html, reply);
 
         Self {
             relates_to: Some(Relation::Reply {
-                in_reply_to: InReplyTo { event_id: original_message.event_id().to_owned() },
+                in_reply_to: InReplyTo { event_id: original_message.event_id.to_owned() },
             }),
-            ..Self::text_plain(body)
+            ..Self::text_html(body, html_body)
         }
     }
 
     /// Creates a html text reply to a message.
     ///
-    /// Different from `text_reply_plain`, this constructor requires specifically a
-    /// [`RoomMessageEvent`] since it creates a permalink to the previous message, for which the
-    /// room ID is required. If you want to reply to a [`SyncRoomMessageEvent`], you have to convert
-    /// it first by calling
+    /// This constructor requires an [`OriginalRoomMessageEvent`] since it creates a permalink to
+    /// the previous message, for which the room ID is required. If you want to reply to an
+    /// [`OriginalSyncRoomMessageEvent`], you have to convert it first by calling
     /// [`.into_full_event()`][crate::events::OriginalSyncMessageLikeEvent::into_full_event].
     pub fn text_reply_html(
         reply: impl fmt::Display,
@@ -148,27 +152,34 @@ impl RoomMessageEventContent {
     }
 
     /// Creates a plain text notice reply to a message.
+    ///
+    /// This constructor requires an [`OriginalRoomMessageEvent`] since it creates a permalink to
+    /// the previous message, for which the room ID is required. If you want to reply to an
+    /// [`OriginalSyncRoomMessageEvent`], you have to convert it first by calling
+    /// [`.into_full_event()`][crate::events::OriginalSyncMessageLikeEvent::into_full_event].
     pub fn notice_reply_plain(
         reply: impl fmt::Display,
-        original_message: &impl ReplyBaseEvent,
+        original_message: &OriginalRoomMessageEvent,
     ) -> Self {
         let quoted = reply::get_plain_quote_fallback(original_message);
+        let quoted_html = reply::get_html_quote_fallback(original_message);
 
         let body = format!("{}\n\n{}", quoted, reply);
+        let html_body = format!("{}\n\n{}", quoted_html, reply);
+
         Self {
             relates_to: Some(Relation::Reply {
-                in_reply_to: InReplyTo { event_id: original_message.event_id().to_owned() },
+                in_reply_to: InReplyTo { event_id: original_message.event_id.to_owned() },
             }),
-            ..Self::notice_plain(body)
+            ..Self::notice_html(body, html_body)
         }
     }
 
     /// Creates a html text notice reply to a message.
     ///
-    /// Different from `notice_reply_plain`, this constructor requires specifically a
-    /// [`RoomMessageEvent`] since it creates a permalink to the previous message, for which the
-    /// room ID is required. If you want to reply to a [`SyncRoomMessageEvent`], you have to convert
-    /// it first by calling
+    /// This constructor requires an [`OriginalRoomMessageEvent`] since it creates a permalink to
+    /// the previous message, for which the room ID is required. If you want to reply to an
+    /// [`OriginalSyncRoomMessageEvent`], you have to convert it first by calling
     /// [`.into_full_event()`][crate::events::OriginalSyncMessageLikeEvent::into_full_event].
     pub fn notice_reply_html(
         reply: impl fmt::Display,
diff --git a/crates/ruma-common/src/events/room/message/reply.rs b/crates/ruma-common/src/events/room/message/reply.rs
index c6fcd30c..84f41885 100644
--- a/crates/ruma-common/src/events/room/message/reply.rs
+++ b/crates/ruma-common/src/events/room/message/reply.rs
@@ -1,59 +1,11 @@
 use indoc::formatdoc;
 
-use super::{
-    FormattedBody, MessageType, OriginalRoomMessageEvent, OriginalSyncRoomMessageEvent,
-    RoomMessageEventContent,
-};
-use crate::{EventId, UserId};
+use super::{FormattedBody, MessageType, OriginalRoomMessageEvent};
 
-/// An event that can be replied to.
-///
-/// This trait only exists to allow the plain-text `reply` constructors on `MessageLikeEventContent`
-/// to use either a [`RoomMessageEvent`] or a [`SyncRoomMessageEvent`] as the event being replied
-/// to.
-pub trait ReplyBaseEvent {
-    #[doc(hidden)]
-    fn event_id(&self) -> &EventId;
+pub fn get_plain_quote_fallback(original_message: &OriginalRoomMessageEvent) -> String {
+    let sender = &original_message.sender;
 
-    #[doc(hidden)]
-    fn sender(&self) -> &UserId;
-
-    #[doc(hidden)]
-    fn content(&self) -> &RoomMessageEventContent;
-}
-
-impl ReplyBaseEvent for OriginalRoomMessageEvent {
-    fn event_id(&self) -> &EventId {
-        &self.event_id
-    }
-
-    fn sender(&self) -> &UserId {
-        &self.sender
-    }
-
-    fn content(&self) -> &RoomMessageEventContent {
-        &self.content
-    }
-}
-
-impl ReplyBaseEvent for OriginalSyncRoomMessageEvent {
-    fn event_id(&self) -> &EventId {
-        &self.event_id
-    }
-
-    fn sender(&self) -> &UserId {
-        &self.sender
-    }
-
-    fn content(&self) -> &RoomMessageEventContent {
-        &self.content
-    }
-}
-
-pub fn get_plain_quote_fallback(original_message: &impl ReplyBaseEvent) -> String {
-    let sender = original_message.sender();
-
-    match &original_message.content().msgtype {
+    match &original_message.content.msgtype {
         MessageType::Audio(_) => {
             format!("> <{}> sent an audio file.", sender)
         }
@@ -301,10 +253,12 @@ fn formatted_or_plain_body<'a>(formatted: &'a Option<FormattedBody>, body: &'a s
 #[cfg(test)]
 mod tests {
     use crate::{
-        event_id, events::MessageLikeUnsigned, room_id, user_id, MilliSecondsSinceUnixEpoch,
+        event_id,
+        events::{room::message::RoomMessageEventContent, MessageLikeUnsigned},
+        room_id, user_id, MilliSecondsSinceUnixEpoch,
     };
 
-    use super::{OriginalRoomMessageEvent, RoomMessageEventContent};
+    use super::OriginalRoomMessageEvent;
 
     #[test]
     fn plain_quote_fallback_multiline() {