diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4919b34a..5e4ec5bf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,6 +17,7 @@
 
 - [#575](https://github.com/oauth2-proxy/oauth2-proxy/pull/575) Stop accepting legacy SHA1 signed cookies (@NickMeves)
 - [#722](https://github.com/oauth2-proxy/oauth2-proxy/pull/722) Validate Redis configuration options at startup (@NickMeves)
+- [#791](https://github.com/oauth2-proxy/oauth2-proxy/pull/791) Remove GetPreferredUsername method from provider interface (@NickMeves)
 - [#764](https://github.com/oauth2-proxy/oauth2-proxy/pull/764) Document bcrypt encryption for htpasswd (and hide SHA) (@lentzi90)
 - [#616](https://github.com/oauth2-proxy/oauth2-proxy/pull/616) Add support to ensure user belongs in required groups when using the OIDC provider (@stefansedich)
 
diff --git a/oauthproxy.go b/oauthproxy.go
index 17d106d5..0f69caab 100644
--- a/oauthproxy.go
+++ b/oauthproxy.go
@@ -296,34 +296,31 @@ func (p *OAuthProxy) GetRedirectURI(host string) string {
 	return u.String()
 }
 
-func (p *OAuthProxy) redeemCode(ctx context.Context, host, code string) (s *sessionsapi.SessionState, err error) {
+func (p *OAuthProxy) redeemCode(ctx context.Context, host, code string) (*sessionsapi.SessionState, error) {
 	if code == "" {
 		return nil, errors.New("missing code")
 	}
 	redirectURI := p.GetRedirectURI(host)
-	s, err = p.provider.Redeem(ctx, redirectURI, code)
+	s, err := p.provider.Redeem(ctx, redirectURI, code)
 	if err != nil {
-		return
+		return nil, err
 	}
 
 	if s.Email == "" {
 		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 err != nil && err.Error() != "not implemented" {
+			return nil, err
 		}
 	}
 
 	if s.User == "" {
 		s.User, err = p.provider.GetUserName(ctx, s)
-		if err != nil && err.Error() == "not implemented" {
-			err = nil
+		if err != nil && err.Error() != "not implemented" {
+			return nil, err
 		}
 	}
-	return
+
+	return s, nil
 }
 
 // MakeCSRFCookie creates a cookie for CSRF
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