diff --git a/src/github.com/matrix-org/dendrite/roomserver/api/output.go b/src/github.com/matrix-org/dendrite/roomserver/api/output.go
index ba514ec10..8cbe9b30d 100644
--- a/src/github.com/matrix-org/dendrite/roomserver/api/output.go
+++ b/src/github.com/matrix-org/dendrite/roomserver/api/output.go
@@ -26,8 +26,8 @@ type OutputRoomEvent struct {
 	// This is used by consumers to check if they can safely update their
 	// current state using the delta supplied in AddsStateEventIDs and
 	// RemovesStateEventIDs.
-	// If they the LastSentEventID doesn't match what they were expecting it to
-	// be they can use the LatestEventIDs to request the full current state.
+	// If the LastSentEventID doesn't match what they were expecting it to be
+	// they can use the LatestEventIDs to request the full current state.
 	LastSentEventID string
 }