diff --git a/consent/handler.go b/consent/handler.go
index 89e521058b..48167e7380 100644
--- a/consent/handler.go
+++ b/consent/handler.go
@@ -1053,10 +1053,5 @@ func (h *Handler) decodeFlowWithClient(ctx context.Context, challenge string, op
 		return nil, err
 	}
 
-	f.Client, err = h.r.ClientManager().GetConcreteClient(ctx, f.ClientID)
-	if err != nil {
-		return nil, err
-	}
-
 	return f, nil
 }
diff --git a/consent/strategy_default.go b/consent/strategy_default.go
index 241a52a8b2..6d7f8c67e9 100644
--- a/consent/strategy_default.go
+++ b/consent/strategy_default.go
@@ -348,11 +348,6 @@ func (s *DefaultStrategy) verifyAuthentication(
 		return nil, errorsx.WithStack(fosite.ErrAccessDenied.WithHint("The login verifier is invalid."))
 	}
 
-	f.Client, err = s.r.ClientManager().GetConcreteClient(ctx, f.ClientID)
-	if err != nil {
-		return nil, err
-	}
-
 	session, err := s.r.ConsentManager().VerifyAndInvalidateLoginRequest(ctx, verifier)
 	if errors.Is(err, sqlcon.ErrNoRows) {
 		return nil, errorsx.WithStack(fosite.ErrAccessDenied.WithHint("The login verifier has already been used, has not been granted, or is invalid."))
@@ -657,12 +652,6 @@ func (s *DefaultStrategy) verifyConsent(ctx context.Context, _ http.ResponseWrit
 	if err != nil {
 		return nil, nil, errorsx.WithStack(fosite.ErrAccessDenied.WithHint("The consent verifier has already been used, has not been granted, or is invalid."))
 	}
-
-	f.Client, err = s.r.ClientManager().GetConcreteClient(ctx, f.ClientID)
-	if err != nil {
-		return nil, nil, err
-	}
-
 	if f.Client.GetID() != r.URL.Query().Get("client_id") {
 		return nil, nil, errorsx.WithStack(fosite.ErrInvalidClient.WithHint("The flow client id does not match the authorize request client id."))
 	}
diff --git a/flow/flow.go b/flow/flow.go
index d81816b325..0502bc544b 100644
--- a/flow/flow.go
+++ b/flow/flow.go
@@ -119,7 +119,7 @@ type Flow struct {
 	// Client is the OAuth 2.0 Client that initiated the request.
 	//
 	// required: true
-	Client   *client.Client `db:"-" json:"client,omitempty"`
+	Client   *client.Client `db:"-" json:"c,omitempty"`
 	ClientID string         `db:"client_id" json:"ci,omitempty"`
 
 	// RequestURL is the original OAuth 2.0 Authorization URL requested by the OAuth 2.0 client. It is the URL which
@@ -514,7 +514,6 @@ func (f Flow) ToLoginChallenge(ctx context.Context, cipherProvider CipherProvide
 	if f.Client != nil {
 		f.ClientID = f.Client.GetID()
 	}
-	f.Client = nil
 	return flowctx.Encode(ctx, cipherProvider.FlowCipher(), f, flowctx.AsLoginChallenge)
 }
 
@@ -523,7 +522,6 @@ func (f Flow) ToLoginVerifier(ctx context.Context, cipherProvider CipherProvider
 	if f.Client != nil {
 		f.ClientID = f.Client.GetID()
 	}
-	f.Client = nil
 	return flowctx.Encode(ctx, cipherProvider.FlowCipher(), f, flowctx.AsLoginVerifier)
 }
 
@@ -532,7 +530,6 @@ func (f Flow) ToConsentChallenge(ctx context.Context, cipherProvider CipherProvi
 	if f.Client != nil {
 		f.ClientID = f.Client.GetID()
 	}
-	f.Client = nil
 	return flowctx.Encode(ctx, cipherProvider.FlowCipher(), f, flowctx.AsConsentChallenge)
 }
 
@@ -541,6 +538,5 @@ func (f Flow) ToConsentVerifier(ctx context.Context, cipherProvider CipherProvid
 	if f.Client != nil {
 		f.ClientID = f.Client.GetID()
 	}
-	f.Client = nil
 	return flowctx.Encode(ctx, cipherProvider.FlowCipher(), f, flowctx.AsConsentVerifier)
 }
diff --git a/persistence/sql/persister_consent.go b/persistence/sql/persister_consent.go
index e68929b428..5bd9713938 100644
--- a/persistence/sql/persister_consent.go
+++ b/persistence/sql/persister_consent.go
@@ -198,10 +198,6 @@ func (p *Persister) GetFlowByConsentChallenge(ctx context.Context, challenge str
 	if f.RequestedAt.Add(p.config.ConsentRequestMaxAge(ctx)).Before(time.Now()) {
 		return nil, errorsx.WithStack(fosite.ErrRequestUnauthorized.WithHint("The consent request has expired, please try again."))
 	}
-	f.Client, err = p.GetConcreteClient(ctx, f.ClientID)
-	if err != nil {
-		return nil, err
-	}
 
 	return f, nil
 }
@@ -266,10 +262,6 @@ func (p *Persister) GetLoginRequest(ctx context.Context, loginChallenge string)
 	if f.RequestedAt.Add(p.config.ConsentRequestMaxAge(ctx)).Before(time.Now()) {
 		return nil, errorsx.WithStack(fosite.ErrRequestUnauthorized.WithHint("The login request has expired, please try again."))
 	}
-	f.Client, err = p.GetConcreteClient(ctx, f.ClientID)
-	if err != nil {
-		return nil, err
-	}
 	lr := f.GetLoginRequest()
 	// Restore the short challenge ID, which was previously sent to the encoded flow,
 	// to make sure that the challenge ID in the returned flow matches the param.
@@ -309,10 +301,6 @@ func (p *Persister) VerifyAndInvalidateConsentRequest(ctx context.Context, verif
 	if f.NID != p.NetworkID(ctx) {
 		return nil, errorsx.WithStack(sqlcon.ErrNoRows)
 	}
-	f.Client, err = p.GetConcreteClient(ctx, f.ClientID)
-	if err != nil {
-		return nil, err
-	}
 
 	if err = f.InvalidateConsentRequest(); err != nil {
 		return nil, errorsx.WithStack(fosite.ErrInvalidRequest.WithDebug(err.Error()))
@@ -359,10 +347,6 @@ func (p *Persister) VerifyAndInvalidateLoginRequest(ctx context.Context, verifie
 	if f.NID != p.NetworkID(ctx) {
 		return nil, errorsx.WithStack(sqlcon.ErrNoRows)
 	}
-	f.Client, err = p.GetConcreteClient(ctx, f.ClientID)
-	if err != nil {
-		return nil, err
-	}
 
 	if err := f.InvalidateLoginRequest(); err != nil {
 		return nil, errorsx.WithStack(fosite.ErrInvalidRequest.WithDebug(err.Error()))