diff --git a/src/github.com/matrix-org/dendrite/common/eventcontent.go b/src/github.com/matrix-org/dendrite/common/eventcontent.go
index 01a29d321..971c4f0a7 100644
--- a/src/github.com/matrix-org/dendrite/common/eventcontent.go
+++ b/src/github.com/matrix-org/dendrite/common/eventcontent.go
@@ -22,11 +22,11 @@ type CreateContent struct {
 
 // MemberContent is the event content for http://matrix.org/docs/spec/client_server/r0.2.0.html#m-room-member
 type MemberContent struct {
-	Membership       string   `json:"membership"`
-	DisplayName      string   `json:"displayname,omitempty"`
-	AvatarURL        string   `json:"avatar_url,omitempty"`
-	Reason           string   `json:"reason,omitempty"`
-	ThirdPartyInvite TPInvite `json:"third_party_invite,omitempty"`
+	Membership       string    `json:"membership"`
+	DisplayName      string    `json:"displayname,omitempty"`
+	AvatarURL        string    `json:"avatar_url,omitempty"`
+	Reason           string    `json:"reason,omitempty"`
+	ThirdPartyInvite *TPInvite `json:"third_party_invite,omitempty"`
 }
 
 // TPInvite is the "Invite" structure defined at http://matrix.org/docs/spec/client_server/r0.2.0.html#m-room-member
diff --git a/src/github.com/matrix-org/dendrite/federationapi/writers/threepid.go b/src/github.com/matrix-org/dendrite/federationapi/writers/threepid.go
index f57cd415c..90bc4390e 100644
--- a/src/github.com/matrix-org/dendrite/federationapi/writers/threepid.go
+++ b/src/github.com/matrix-org/dendrite/federationapi/writers/threepid.go
@@ -113,7 +113,7 @@ func createInviteFrom3PIDInvite(
 	content := common.MemberContent{
 		// TODO: Load the profile
 		Membership: "invite",
-		ThirdPartyInvite: common.TPInvite{
+		ThirdPartyInvite: &common.TPInvite{
 			Signed: inv.Signed,
 		},
 	}