diff --git a/pkg/services/authn/grpcutils/config.go b/pkg/services/authn/grpcutils/config.go
index 6fd864bfc19..d217c15e601 100644
--- a/pkg/services/authn/grpcutils/config.go
+++ b/pkg/services/authn/grpcutils/config.go
@@ -39,7 +39,7 @@ func ReadGrpcClientConfig(cfg *setting.Cfg) (*GrpcClientConfig, error) {
 	return &GrpcClientConfig{
 		Token:            section.Key("token").MustString(""),
 		TokenExchangeURL: section.Key("token_exchange_url").MustString(""),
-		TokenNamespace:   section.Key("token_namespace").MustString("stack-" + cfg.StackID),
+		TokenNamespace:   section.Key("token_namespace").MustString("stacks-" + cfg.StackID),
 		Mode:             mode,
 	}, nil
 }
diff --git a/pkg/services/authn/grpcutils/grpc_authenticator.go b/pkg/services/authn/grpcutils/grpc_authenticator.go
index 249e122d51b..63e9566823f 100644
--- a/pkg/services/authn/grpcutils/grpc_authenticator.go
+++ b/pkg/services/authn/grpcutils/grpc_authenticator.go
@@ -10,7 +10,7 @@ import (
 )
 
 func NewGrpcAuthenticator(cfg *setting.Cfg) (*authnlib.GrpcAuthenticator, error) {
-	authCfg, err := ReadGprcServerConfig(cfg)
+	authCfg, err := ReadGrpcServerConfig(cfg)
 	if err != nil {
 		return nil, err
 	}