Hi Pierre, On Thu, Jan 21, 2021 at 01:51 AM, PierreGondois wrote: > > -#ifndef __ARM_CORTEX_A5x_H__ > -#define __ARM_CORTEX_A5x_H__ > +#ifndef ARM_CORTEX_A5X_H__ > +#define ARM_CORTEX_A5X_H__ There should be a single trailing underscore for #include guards. See https://edk2-docs.gitbook.io/edk-ii-c-coding-standards-specification/5_source_files/53_include_files#5-3-5-all-include-file-contents-must-be-protected-by-a-include-guard With that changed: Reviewed-by: Sami Mujawar Regards, Sami Mujawar