diff --git a/docs/developer_guides/new_methods.md b/docs/developer_guides/new_methods.md
index 095778b9a..f0b3a51d7 100644
--- a/docs/developer_guides/new_methods.md
+++ b/docs/developer_guides/new_methods.md
@@ -90,7 +90,7 @@ You can declare the dataparser in the same config file:
 from nerfstudio.plugins.registry_dataparser import DataParserSpecification
 from my_method.custom_dataparser import CustomDataparserConfig
 
-MyDataparser = DataParserSpecification(config=CustomDataparserConfig)
+MyDataparser = DataParserSpecification(config=CustomDataparserConfig())
 ```
 
 Then add the following lines in the `pyproject.toml` file, where the entrypoint to the new dataparser is set.