diff --git a/src/Core/SettingsChangesHistory.h b/src/Core/SettingsChangesHistory.h
index ba8f253c6af..d5346117837 100644
--- a/src/Core/SettingsChangesHistory.h
+++ b/src/Core/SettingsChangesHistory.h
@@ -89,7 +89,7 @@ static std::map<ClickHouseVersion, SettingsChangesHistory::SettingsChanges> sett
               {"ignore_drop_queries_probability", 0, 0, "Allow to ignore drop queries in server with specified probability for testing purposes"},
               {"lightweight_deletes_sync", 2, 2, "The same as 'mutation_sync', but controls only execution of lightweight deletes"},
               {"query_cache_system_table_handling", "save", "throw", "The query cache no longer caches results of queries against system tables"},
-              {"input_format_json_throw_on_duplicated_fields", false, true, "Throw an exception if there are duplicated fields in JSON object in JSON input formats. If disabled, the first field will be used"},
+              {"input_format_json_throw_on_duplicated_fields", true, true, "Throw an exception if there are duplicated fields in JSON object in JSON input formats. If disabled, the first field will be used"},
               }},
     {"24.3", {{"s3_connect_timeout_ms", 1000, 1000, "Introduce new dedicated setting for s3 connection timeout"},
               {"allow_experimental_shared_merge_tree", false, true, "The setting is obsolete"},