diff --git a/DuetPkg/PcRtc/x64/RealTimeClock.c b/DuetPkg/PcRtc/X64/RealTimeClock.c
similarity index 100%
rename from DuetPkg/PcRtc/x64/RealTimeClock.c
rename to DuetPkg/PcRtc/X64/RealTimeClock.c