diff --git a/api/auth.go b/api/auth.go
index b9004139e9d49f596f25870f683b1fc3e4774a7b..50ac3131b93a6da5feba080fbbdc24846fe78a72 100644
--- a/api/auth.go
+++ b/api/auth.go
@@ -169,13 +169,13 @@ func (c *Client) MakePrecannedContact(precannedID uint) contact.Contact {
 // GetRelationshipFingerprint returns a unique 15 character fingerprint for an
 // E2E relationship. An error is returned if no relationship with the partner
 // is found.
-func (c *Client) GetRelationshipFingerprint(p *id.ID) (partner.ConnectionFp, error) {
+func (c *Client) GetRelationshipFingerprint(p *id.ID) (string, error) {
 	m, err := c.e2e.GetPartner(p)
 	if err != nil {
-		return partner.ConnectionFp{}, errors.Errorf("could not get partner %s: %+v",
+		return "", errors.Errorf("could not get partner %s: %+v",
 			partner.ConnectionFp{}, err)
 	} else if m == nil {
-		return partner.ConnectionFp{}, errors.Errorf("manager for partner %s is nil.",
+		return "", errors.Errorf("manager for partner %s is nil.",
 			p)
 	}
 
diff --git a/cmd/single.go b/cmd/single.go
index ce698a01a32b79138ff80e1edefe9b4d15d7cb06..c2cd177f2c01987aa03d308f2fa96dce32946e06 100644
--- a/cmd/single.go
+++ b/cmd/single.go
@@ -62,7 +62,7 @@ var singleCmd = &cobra.Command{
 			recvCh: make(chan struct {
 				request *single.Request
 				ephID   receptionID.EphemeralIdentity
-				round   rounds.Round
+				round   []rounds.Round
 			}),
 		}
 
@@ -142,7 +142,7 @@ type Response struct {
 }
 
 func (r *Response) Callback(payload []byte, receptionID receptionID.EphemeralIdentity,
-	round rounds.Round, err error) {
+	round []rounds.Round, err error) {
 	jww.DEBUG.Printf("Payload: %v, receptionID: %v, round: %v, err: %v",
 		payload, receptionID, round, err)
 	r.callbackChan <- struct {
@@ -243,16 +243,16 @@ type Receiver struct {
 	recvCh chan struct {
 		request *single.Request
 		ephID   receptionID.EphemeralIdentity
-		round   rounds.Round
+		round   []rounds.Round
 	}
 }
 
 func (r *Receiver) Callback(req *single.Request, ephID receptionID.EphemeralIdentity,
-	round rounds.Round) {
+	round []rounds.Round) {
 	r.recvCh <- struct {
 		request *single.Request
 		ephID   receptionID.EphemeralIdentity
-		round   rounds.Round
+		round   []rounds.Round
 	}{
 		request: req,
 		ephID:   ephID,