diff --git a/readme.md b/readme.md
index 807c719..1b1c5b5 100644
--- a/readme.md
+++ b/readme.md
@@ -20,6 +20,14 @@ create table my_table(a string, b string, ...)
 
 ### Custom formatting
 
+The default separator, quote, and escape characters from the `opencsv` library are:
+
+```
+DEFAULT_ESCAPE_CHARACTER \
+DEFAULT_QUOTE_CHARACTER  "
+DEFAULT_SEPARATOR        ,
+```
+
 You can also specify custom separator, quote, or escape characters.
 
 ```
@@ -54,4 +62,4 @@ Run `mvn eclipse:eclipse` to generate `.project` and `.classpath` files for ecli
 
 ## License
 
-csv-serde is open source and licensed under the [Apache 2 License](http://www.apache.org/licenses/LICENSE-2.0.html).
\ No newline at end of file
+csv-serde is open source and licensed under the [Apache 2 License](http://www.apache.org/licenses/LICENSE-2.0.html).