diff --git a/backends-clickhouse/src/test/resources/text-data/json-settings/data.txt b/backends-clickhouse/src/test/resources/text-data/json-settings/data.txt
index 230b46ec38038..0541ce3469a71 100644
--- a/backends-clickhouse/src/test/resources/text-data/json-settings/data.txt
+++ b/backends-clickhouse/src/test/resources/text-data/json-settings/data.txt
@@ -1,5 +1,4 @@
 {"a":1,"b":2,"c":3}
-{"a":"a5", "B":"b6", "c":7}
 {"a":"4"}
 {"t":{"ta":"cc","tb":100,"tc":1.234}}
 {"t":{"ta":"cc","tb":100,"td":"ignore"}}
diff --git a/cpp-ch/local-engine/Common/CHUtil.cpp b/cpp-ch/local-engine/Common/CHUtil.cpp
index d32eed92340a4..35b4f0c97806f 100644
--- a/cpp-ch/local-engine/Common/CHUtil.cpp
+++ b/cpp-ch/local-engine/Common/CHUtil.cpp
@@ -781,7 +781,6 @@ 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_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);