diff --git a/dumpling-overview.md b/dumpling-overview.md
index f16c7041b6532..a80cb03f54736 100644
--- a/dumpling-overview.md
+++ b/dumpling-overview.md
@@ -404,7 +404,7 @@ SET GLOBAL tidb_gc_life_time = '10m';
 | `--csv-separator`            | Separator of each value in CSV files. It is not recommended to use the default ','. It is recommended to use '\|+\|' or other uncommon character combinations| ','                                                                                                                                                                                                                                                                                               | ','                                        |
 | `--csv-null-value`           | Representation of null values in CSV files                                                                                                                                                                                                                                                                                         | "\\N"                                      |
 | `--csv-line-terminator`      | The terminator at the end of a line for CSV files. When exporting data to a CSV file, you can specify the desired terminator with this option. This option supports "\\r\\n" and "\\n". The default value is "\\r\\n", which is consistent with the earlier versions. Because quotes in bash have different escaping rules, if you want to specify LF (linefeed) as a terminator, you can use a syntax similar to `--csv-line-terminator $'\n'`. | "\\r\\n" |
-| `--csv-output-dialect`      | Dumpling represents binary data types in CSV files in UTF-8 format by default. To export binary data in another format such as HEX, set the parameter to 'redshift'. Note that the '0x' prefix will be removed. For example, '0x61' is represented as '61'.  | ""  |
+| `--csv-output-dialect`      | Dumpling represents binary data types in CSV files in UTF-8 format by default. To export binary data in another format such as HEX, set this option to `"redshift"`. Note that the `0x` prefix will be removed. For example, `0x61` is represented as `61`.  | ""  |
 | `--escape-backslash`         | Use backslash (`\`) to escape special characters in the export file                                                                                                                                                                                                                                                                | true                                       |
 | `--output-filename-template` | The filename templates represented in the format of [golang template](https://golang.org/pkg/text/template/#hdr-Arguments) <br/> Support the `{{.DB}}`, `{{.Table}}`, and `{{.Index}}` arguments <br/> The three arguments represent the database name, table name, and chunk ID of the data file                                  | `{{.DB}}.{{.Table}}.{{.Index}}`            |
 | `--status-addr`              | Dumpling's service address, including the address for Prometheus to pull metrics and pprof debugging                                                                                                                                                                                                                               | ":8281"                                    |