diff --git a/src/service/rooms/timeline/append.rs b/src/service/rooms/timeline/append.rs
index 89eedfd9..e657575d 100644
--- a/src/service/rooms/timeline/append.rs
+++ b/src/service/rooms/timeline/append.rs
@@ -127,7 +127,7 @@ where
 	// Make unsigned fields correct. This is not properly documented in the spec,
 	// but state events need to have previous content in the unsigned field, so
 	// clients can easily interpret things like membership changes
-	if let Some(state_key) = pdu.state_key() {
+	if let Some(_state_key) = pdu.state_key() {
 		if let CanonicalJsonValue::Object(unsigned) = pdu_json
 			.entry("unsigned".to_owned())
 			.or_insert_with(|| CanonicalJsonValue::Object(BTreeMap::default()))
@@ -226,7 +226,7 @@ where
 	let mut highlights = Vec::with_capacity(push_target.len().saturating_add(1));
 
 	if *pdu.kind() == TimelineEventType::RoomMember {
-		if let Some(state_key) = pdu.state_key() {
+		if let Some(_state_key) = pdu.state_key() {
 			let target_user_id = UserId::parse(state_key)?;
 
 			if self.services.users.is_active_local(target_user_id).await {
@@ -336,7 +336,7 @@ where
 					.remove(room_id);
 			},
 		| TimelineEventType::RoomMember => {
-			if let Some(state_key) = pdu.state_key() {
+			if let Some(_state_key) = pdu.state_key() {
 				// if the state_key fails
 				let target_user_id =
 					UserId::parse(state_key).expect("This state_key was previously validated");
@@ -361,7 +361,7 @@ where
 
 	// Space permission cascading: react to role-related state events
 	if self.services.roles.is_enabled() {
-		if let Some(state_key) = pdu.state_key() {
+		if let Some(_state_key) = pdu.state_key() {
 			let event_type_str = pdu.event_type().to_string();
 			match event_type_str.as_str() {
 				| "m.space.roles" | "m.space.role.member" | "m.space.role.room" => {