diff --git a/cpp-ch/local-engine/Common/CHUtil.cpp b/cpp-ch/local-engine/Common/CHUtil.cpp
index 1be9c09a8c26..787277dbefb1 100644
--- a/cpp-ch/local-engine/Common/CHUtil.cpp
+++ b/cpp-ch/local-engine/Common/CHUtil.cpp
@@ -766,7 +766,7 @@ void BackendInitializerUtil::initSettings(std::map<std::string, std::string> & b
     settings.set("input_format_parquet_import_nested", true);
     settings.set("input_format_json_read_numbers_as_strings", true);
     settings.set("input_format_json_read_bools_as_numbers", false);
-    settings.set("input_format_json_ignore_key_case", true);
+    settings.set("input_format_json_case_insensitive_column_matching", true);
     settings.set("input_format_csv_trim_whitespaces", false);
     settings.set("input_format_csv_allow_cr_end_of_line", true);
     settings.set("output_format_orc_string_as_string", true);