diff --git a/roomserver/internal/input_events.go b/roomserver/internal/input_events.go
index 04538cf69..a63082990 100644
--- a/roomserver/internal/input_events.go
+++ b/roomserver/internal/input_events.go
@@ -18,6 +18,7 @@ package internal
 
 import (
 	"context"
+	"fmt"
 
 	"github.com/matrix-org/dendrite/internal/eventutil"
 	"github.com/matrix-org/dendrite/roomserver/api"
@@ -65,13 +66,13 @@ func (r *RoomserverInternalAPI) processRoomEvent(
 	// Store the event.
 	roomNID, stateAtEvent, redactionEvent, redactedEventID, err := r.DB.StoreEvent(ctx, event, input.TransactionID, authEventNIDs)
 	if err != nil {
-		return
+		return "", fmt.Errorf("r.DB.StoreEvent: %w", err)
 	}
 	// if storing this event results in it being redacted then do so.
 	if redactedEventID == event.EventID() {
 		r, rerr := eventutil.RedactEvent(redactionEvent, &event)
 		if rerr != nil {
-			return "", rerr
+			return "", fmt.Errorf("eventutil.RedactEvent: %w", rerr)
 		}
 		event = *r
 	}
@@ -93,7 +94,7 @@ func (r *RoomserverInternalAPI) processRoomEvent(
 		// Lets calculate one.
 		err = r.calculateAndSetState(ctx, input, roomNID, &stateAtEvent, event)
 		if err != nil {
-			return
+			return "", fmt.Errorf("r.calculateAndSetState: %w", err)
 		}
 	}
 
@@ -105,7 +106,7 @@ func (r *RoomserverInternalAPI) processRoomEvent(
 		input.SendAsServer,  // send as server
 		input.TransactionID, // transaction ID
 	); err != nil {
-		return
+		return "", fmt.Errorf("r.updateLatestEvents: %w", err)
 	}
 
 	// processing this event resulted in an event (which may not be the one we're processing)
@@ -123,7 +124,7 @@ func (r *RoomserverInternalAPI) processRoomEvent(
 			},
 		})
 		if err != nil {
-			return
+			return "", fmt.Errorf("r.WriteOutputEvents: %w", err)
 		}
 	}
 
diff --git a/roomserver/storage/sqlite3/room_aliases_table.go b/roomserver/storage/sqlite3/room_aliases_table.go
index 09da23a98..4a5357776 100644
--- a/roomserver/storage/sqlite3/room_aliases_table.go
+++ b/roomserver/storage/sqlite3/room_aliases_table.go
@@ -140,7 +140,7 @@ func (s *roomAliasesStatements) DeleteRoomAlias(
 	ctx context.Context, alias string,
 ) (err error) {
 	return s.writer.Do(s.db, nil, func(txn *sql.Tx) error {
-		stmt := sqlutil.TxStmt(txn, s.insertRoomAliasStmt)
+		stmt := sqlutil.TxStmt(txn, s.deleteRoomAliasStmt)
 		_, err := stmt.ExecContext(ctx, alias)
 		return err
 	})