# Configure the kernel (FreeRTOSConfig.h)
<a name="freertos-config"></a>

You can configure the FreeRTOS kernel for a specific board and application with the `FreeRTOSConfig.h` header file. Every application built on the kernel must have a `FreeRTOSConfig.h` header file in its preprocessor include path. `FreeRTOSConfig.h` is application-specific and should be placed under an application directory, and not in one of the FreeRTOS kernel source code directories.

The `FreeRTOSConfig.h` files for the FreeRTOS demo and test applications are located at `freertos/vendors/vendor/boards/board/aws_demos/config_files/FreeRTOSConfig.h` and `freertos/vendors/vendor/boards/board/aws_tests/config_files/FreeRTOSConfig.h`.

For a list of the available configuration parameters to specify in `FreeRTOSConfig.h`, see [FreeRTOS.org](https://www.freertos.org/a00110.html).