diff --git a/pkg/client/rp/errors.go b/pkg/client/rp/errors.go
new file mode 100644
index 0000000..b95420b
--- /dev/null
+++ b/pkg/client/rp/errors.go
@@ -0,0 +1,5 @@
+package rp
+
+import "errors"
+
+var ErrRelyingPartyNotSupportRevokeCaller = errors.New("RelyingParty does not support RevokeCaller")
diff --git a/pkg/client/rp/relying_party.go b/pkg/client/rp/relying_party.go
index 5899af0..e31b025 100644
--- a/pkg/client/rp/relying_party.go
+++ b/pkg/client/rp/relying_party.go
@@ -4,12 +4,11 @@ import (
 	"context"
 	"encoding/base64"
 	"errors"
-	"fmt"
 	"net/http"
 	"net/url"
 	"time"
 
-	jose "github.com/go-jose/go-jose/v3"
+	"github.com/go-jose/go-jose/v3"
 	"github.com/google/uuid"
 	"github.com/zitadel/logging"
 	"golang.org/x/exp/slog"
@@ -726,5 +725,5 @@ func RevokeToken(ctx context.Context, rp RelyingParty, token string, tokenTypeHi
 	if rc, ok := rp.(client.RevokeCaller); ok && rc.GetRevokeEndpoint() != "" {
 		return client.CallRevokeEndpoint(ctx, request, nil, rc)
 	}
-	return fmt.Errorf("RelyingParty does not support RevokeCaller")
+	return ErrRelyingPartyNotSupportRevokeCaller
 }