Import libs 4 (#758)

1 files changed, 2 insertions, 2 deletions

diff --git a/library/cpp/protobuf/json/proto2json_printer.cpp b/library/cpp/protobuf/json/proto2json_printer.cpp
index aa0823de0e..b2426f395a 100644
--- a/library/cpp/protobuf/json/proto2json_printer.cpp
+++ b/library/cpp/protobuf/json/proto2json_printer.cpp
@@ -408,10 +408,10 @@ namespace NProtobufJson {
 
     void TProto2JsonPrinter::PrintKeyValue(const NProtoBuf::Message& proto,
                                            IJsonOutput& json) {
-        const FieldDescriptor* keyField = proto.GetDescriptor()->FindFieldByName("key");
+        const FieldDescriptor* keyField = proto.GetDescriptor()->map_key();
         Y_ABORT_UNLESS(keyField, "Map entry key field not found.");
         TString key = MakeKey(proto, *keyField);
-        const FieldDescriptor* valueField = proto.GetDescriptor()->FindFieldByName("value");
+        const FieldDescriptor* valueField = proto.GetDescriptor()->map_value();
         Y_ABORT_UNLESS(valueField, "Map entry value field not found.");
         PrintSingleField(proto, *valueField, json, key, true);
     }