1 files changed, 4 insertions, 1 deletions
diff --git a/library/cpp/actors/interconnect/interconnect_handshake.cpp b/library/cpp/actors/interconnect/interconnect_handshake.cpp
index 4a57fc226c0..cb4788a33c0 100644
--- a/library/cpp/actors/interconnect/interconnect_handshake.cpp
+++ b/library/cpp/actors/interconnect/interconnect_handshake.cpp
@@ -491,8 +491,11 @@ namespace NActors {
                     s << ", errorReason# " << errorReason;
                     errorCallback(s.Str());
                 }
-            } else {
+            } else if (proto.HasVersionTag()) {
                 ValidateVersionTag(proto, std::forward<TCallback>(errorCallback));
+            } else {
+                LOG_LOG_IC_X(NActorsServices::INTERCONNECT, "ICH09", NLog::PRI_WARN,
+                    "Neither CompatibilityInfo nor VersionTag of the peer can be validated, accepting by default");
             }
         }