Worked on build system maintenance for the eclipse-openj9/openj9 repository, focusing on resolving a critical compile error caused by inconsistent whitespace in the znathelp.m4 file. Addressed the issue by replacing a tab character with four spaces, ensuring formatting consistency and preventing build failures across different environments. This targeted fix improved the reliability and portability of the build process for downstream users. Utilized expertise in M4 scripting and build system management to deliver a precise solution that reduced troubleshooting time. The work demonstrated attention to detail in maintaining build infrastructure and contributed to smoother development workflows within the project.