diff --git a/DuetPkg/CpuDxe/x64/CpuInterrupt.asm b/DuetPkg/CpuDxe/X64/CpuInterrupt.asm
similarity index 100%
rename from DuetPkg/CpuDxe/x64/CpuInterrupt.asm
rename to DuetPkg/CpuDxe/X64/CpuInterrupt.asm