diff --git a/ydb/core/protos/config.proto b/ydb/core/protos/config.proto
index f6f06c59790d..d481e72ca200 100644
--- a/ydb/core/protos/config.proto
+++ b/ydb/core/protos/config.proto
@@ -1618,7 +1618,7 @@ message TTracingConfig {
     message TBackendConfig {
         message TAuthConfig {
             message TTvmAuth {
-                required string Url = 1;
+                optional string Url = 1;
 
                 required uint32 SelfTvmId = 2;
                 required uint32 TracingTvmId = 3;
diff --git a/ydb/tools/cfg/static.py b/ydb/tools/cfg/static.py
index 6ed20e4cee4c..378962b401ce 100644
--- a/ydb/tools/cfg/static.py
+++ b/ydb/tools/cfg/static.py
@@ -1133,7 +1133,6 @@ def get_sampling_scope(sampling):
             sampling_scope_pb.MaxBurst = sampling['max_burst']
             return sampling_scope_pb
 
-
         def get_external_throttling(throttling):
             throttling_scope_pb = config_pb2.TTracingConfig.TExternalThrottlingScope()
             selectors = throttling.get("scope")