diff --git a/federationsender/types/types.go b/federationsender/types/types.go
index db9dbf34e..398d32677 100644
--- a/federationsender/types/types.go
+++ b/federationsender/types/types.go
@@ -20,12 +20,6 @@ import (
 	"github.com/matrix-org/gomatrixserverlib"
 )
 
-const (
-	FailedEventTypePDU          = "pdu"
-	FailedEventTypeInvite       = "invite"
-	FailedEventTypeSendToDevice = "send_to_device"
-)
-
 // A JoinedHost is a server that is joined to a matrix room.
 type JoinedHost struct {
 	// The MemberEventID of a m.room.member join event.