diff --git a/go.mod b/go.mod
index a42fcf6b..9bf0fa5b 100644
--- a/go.mod
+++ b/go.mod
@@ -39,7 +39,7 @@ require (
 	github.com/stretchr/testify v1.8.0
 	github.com/urfave/cli/v2 v2.20.3
 	github.com/vmihailenco/msgpack/v5 v5.3.5
-	gitlab.protontech.ch/go/liteapi v0.37.1
+	gitlab.protontech.ch/go/liteapi v0.37.2
 	go.uber.org/goleak v1.2.0
 	golang.org/x/exp v0.0.0-20221023144134-a1e5550cf13e
 	golang.org/x/net v0.1.0
diff --git a/go.sum b/go.sum
index 0005b686..33d17dd3 100644
--- a/go.sum
+++ b/go.sum
@@ -403,8 +403,8 @@ github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673/go.mod h1:N3UwUGtsr
 github.com/yuin/goldmark v1.3.5/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=
 github.com/zclconf/go-cty v1.11.0 h1:726SxLdi2SDnjY+BStqB9J1hNp4+2WlzyXLuimibIe0=
 github.com/zclconf/go-cty v1.11.0/go.mod h1:s9IfD1LK5ccNMSWCVFCE2rJfHiZgi7JijgeWIMfhLvA=
-gitlab.protontech.ch/go/liteapi v0.37.1 h1:ajYSnz733L//i9SKOSqxGlZh4bNFYkCnfrUYli52CS4=
-gitlab.protontech.ch/go/liteapi v0.37.1/go.mod h1:IM7ADWjgIL2hXopzx0WNamizEuMgM2QZl7QH12FNflk=
+gitlab.protontech.ch/go/liteapi v0.37.2 h1:9oM5knclpye72tFpphvGbqb4uPnC4q1VwFu+WksS9Xg=
+gitlab.protontech.ch/go/liteapi v0.37.2/go.mod h1:IM7ADWjgIL2hXopzx0WNamizEuMgM2QZl7QH12FNflk=
 go.etcd.io/bbolt v1.3.2/go.mod h1:IbVyRI1SCnLcuJnV2u8VeU0CEYM7e686BmAb1XKL+uU=
 go.opencensus.io v0.21.0/go.mod h1:mSImk1erAIZhrmZN+AvHh14ztQfjbGwt4TtuofqLduU=
 go.opencensus.io v0.22.0/go.mod h1:+kGneAE2xo2IficOXnaByMWTGM9T73dGwxeWcUqIpI8=
diff --git a/internal/user/smtp_prefs.go b/internal/user/smtp_prefs.go
index 04ce22c6..a048a3ac 100644
--- a/internal/user/smtp_prefs.go
+++ b/internal/user/smtp_prefs.go
@@ -18,7 +18,6 @@
 package user
 
 import (
-	"encoding/base64"
 	"fmt"
 
 	"github.com/ProtonMail/gluon/rfc822"
@@ -62,23 +61,15 @@ func newContactSettings(settings liteapi.ContactSettings) *contactSettings {
 	}
 
 	if settings.Scheme != nil {
-		switch *settings.Scheme {
+		switch *settings.Scheme { // nolint:exhaustive
 		case liteapi.PGPMIMEScheme:
 			metadata.Scheme = pgpMIME
 
 		case liteapi.PGPInlineScheme:
 			metadata.Scheme = pgpInline
 
-		case liteapi.InternalScheme:
-			fallthrough
-		case liteapi.EncryptedOutsideScheme:
-			fallthrough
-		case liteapi.ClearScheme:
-			fallthrough
-		case liteapi.ClearMIMEScheme:
-			fallthrough
 		default:
-			break
+			panic("unknown scheme")
 		}
 	}
 
@@ -89,7 +80,7 @@ func newContactSettings(settings liteapi.ContactSettings) *contactSettings {
 				panic(err)
 			}
 
-			metadata.Keys = append(metadata.Keys, base64.StdEncoding.EncodeToString(b))
+			metadata.Keys = append(metadata.Keys, string(b))
 		}
 	}