diff --git a/oauthproxy.go b/oauthproxy.go
index 17d106d5..b3b3cbe6 100644
--- a/oauthproxy.go
+++ b/oauthproxy.go
@@ -310,13 +310,6 @@ func (p *OAuthProxy) redeemCode(ctx context.Context, host, code string) (s *sess
 		s.Email, err = p.provider.GetEmailAddress(ctx, s)
 	}
 
-	if s.PreferredUsername == "" {
-		s.PreferredUsername, err = p.provider.GetPreferredUsername(ctx, s)
-		if err != nil && err.Error() == "not implemented" {
-			err = nil
-		}
-	}
-
 	if s.User == "" {
 		s.User, err = p.provider.GetUserName(ctx, s)
 		if err != nil && err.Error() == "not implemented" {
diff --git a/providers/provider_default.go b/providers/provider_default.go
index 58e1b4fc..ba05a96c 100644
--- a/providers/provider_default.go
+++ b/providers/provider_default.go
@@ -104,11 +104,6 @@ func (p *ProviderData) GetUserName(ctx context.Context, s *sessions.SessionState
 	return "", errors.New("not implemented")
 }
 
-// GetPreferredUsername returns the Account preferred username
-func (p *ProviderData) GetPreferredUsername(ctx context.Context, s *sessions.SessionState) (string, error) {
-	return "", errors.New("not implemented")
-}
-
 // ValidateGroup validates that the provided email exists in the configured provider
 // email group(s).
 func (p *ProviderData) ValidateGroup(email string) bool {
diff --git a/providers/providers.go b/providers/providers.go
index a52eff90..eefc5994 100644
--- a/providers/providers.go
+++ b/providers/providers.go
@@ -12,7 +12,6 @@ type Provider interface {
 	Data() *ProviderData
 	GetEmailAddress(ctx context.Context, s *sessions.SessionState) (string, error)
 	GetUserName(ctx context.Context, s *sessions.SessionState) (string, error)
-	GetPreferredUsername(ctx context.Context, s *sessions.SessionState) (string, error)
 	Redeem(ctx context.Context, redirectURI, code string) (*sessions.SessionState, error)
 	ValidateGroup(string) bool
 	ValidateSessionState(ctx context.Context, s *sessions.SessionState) bool