diff --git a/MdePkg/Library/BaseMemoryLibRepStr/x64/CompareMem.S b/MdePkg/Library/BaseMemoryLibRepStr/X64/CompareMem.S
similarity index 100%
rename from MdePkg/Library/BaseMemoryLibRepStr/x64/CompareMem.S
rename to MdePkg/Library/BaseMemoryLibRepStr/X64/CompareMem.S
diff --git a/MdePkg/Library/BaseMemoryLibRepStr/x64/CompareMem.asm b/MdePkg/Library/BaseMemoryLibRepStr/X64/CompareMem.asm
similarity index 100%
rename from MdePkg/Library/BaseMemoryLibRepStr/x64/CompareMem.asm
rename to MdePkg/Library/BaseMemoryLibRepStr/X64/CompareMem.asm
diff --git a/MdePkg/Library/BaseMemoryLibRepStr/x64/CopyMem.S b/MdePkg/Library/BaseMemoryLibRepStr/X64/CopyMem.S
similarity index 100%
rename from MdePkg/Library/BaseMemoryLibRepStr/x64/CopyMem.S
rename to MdePkg/Library/BaseMemoryLibRepStr/X64/CopyMem.S
diff --git a/MdePkg/Library/BaseMemoryLibRepStr/x64/CopyMem.asm b/MdePkg/Library/BaseMemoryLibRepStr/X64/CopyMem.asm
similarity index 100%
rename from MdePkg/Library/BaseMemoryLibRepStr/x64/CopyMem.asm
rename to MdePkg/Library/BaseMemoryLibRepStr/X64/CopyMem.asm
diff --git a/MdePkg/Library/BaseMemoryLibRepStr/x64/ScanMem16.S b/MdePkg/Library/BaseMemoryLibRepStr/X64/ScanMem16.S
similarity index 100%
rename from MdePkg/Library/BaseMemoryLibRepStr/x64/ScanMem16.S
rename to MdePkg/Library/BaseMemoryLibRepStr/X64/ScanMem16.S
diff --git a/MdePkg/Library/BaseMemoryLibRepStr/x64/ScanMem16.asm b/MdePkg/Library/BaseMemoryLibRepStr/X64/ScanMem16.asm
similarity index 100%
rename from MdePkg/Library/BaseMemoryLibRepStr/x64/ScanMem16.asm
rename to MdePkg/Library/BaseMemoryLibRepStr/X64/ScanMem16.asm
diff --git a/MdePkg/Library/BaseMemoryLibRepStr/x64/ScanMem32.S b/MdePkg/Library/BaseMemoryLibRepStr/X64/ScanMem32.S
similarity index 100%
rename from MdePkg/Library/BaseMemoryLibRepStr/x64/ScanMem32.S
rename to MdePkg/Library/BaseMemoryLibRepStr/X64/ScanMem32.S
diff --git a/MdePkg/Library/BaseMemoryLibRepStr/x64/ScanMem32.asm b/MdePkg/Library/BaseMemoryLibRepStr/X64/ScanMem32.asm
similarity index 100%
rename from MdePkg/Library/BaseMemoryLibRepStr/x64/ScanMem32.asm
rename to MdePkg/Library/BaseMemoryLibRepStr/X64/ScanMem32.asm
diff --git a/MdePkg/Library/BaseMemoryLibRepStr/x64/ScanMem64.S b/MdePkg/Library/BaseMemoryLibRepStr/X64/ScanMem64.S
similarity index 100%
rename from MdePkg/Library/BaseMemoryLibRepStr/x64/ScanMem64.S
rename to MdePkg/Library/BaseMemoryLibRepStr/X64/ScanMem64.S
diff --git a/MdePkg/Library/BaseMemoryLibRepStr/x64/ScanMem64.asm b/MdePkg/Library/BaseMemoryLibRepStr/X64/ScanMem64.asm
similarity index 100%
rename from MdePkg/Library/BaseMemoryLibRepStr/x64/ScanMem64.asm
rename to MdePkg/Library/BaseMemoryLibRepStr/X64/ScanMem64.asm
diff --git a/MdePkg/Library/BaseMemoryLibRepStr/x64/ScanMem8.S b/MdePkg/Library/BaseMemoryLibRepStr/X64/ScanMem8.S
similarity index 100%
rename from MdePkg/Library/BaseMemoryLibRepStr/x64/ScanMem8.S
rename to MdePkg/Library/BaseMemoryLibRepStr/X64/ScanMem8.S
diff --git a/MdePkg/Library/BaseMemoryLibRepStr/x64/ScanMem8.asm b/MdePkg/Library/BaseMemoryLibRepStr/X64/ScanMem8.asm
similarity index 100%
rename from MdePkg/Library/BaseMemoryLibRepStr/x64/ScanMem8.asm
rename to MdePkg/Library/BaseMemoryLibRepStr/X64/ScanMem8.asm
diff --git a/MdePkg/Library/BaseMemoryLibRepStr/x64/SetMem.S b/MdePkg/Library/BaseMemoryLibRepStr/X64/SetMem.S
similarity index 100%
rename from MdePkg/Library/BaseMemoryLibRepStr/x64/SetMem.S
rename to MdePkg/Library/BaseMemoryLibRepStr/X64/SetMem.S
diff --git a/MdePkg/Library/BaseMemoryLibRepStr/x64/SetMem.asm b/MdePkg/Library/BaseMemoryLibRepStr/X64/SetMem.asm
similarity index 100%
rename from MdePkg/Library/BaseMemoryLibRepStr/x64/SetMem.asm
rename to MdePkg/Library/BaseMemoryLibRepStr/X64/SetMem.asm
diff --git a/MdePkg/Library/BaseMemoryLibRepStr/x64/SetMem16.S b/MdePkg/Library/BaseMemoryLibRepStr/X64/SetMem16.S
similarity index 100%
rename from MdePkg/Library/BaseMemoryLibRepStr/x64/SetMem16.S
rename to MdePkg/Library/BaseMemoryLibRepStr/X64/SetMem16.S
diff --git a/MdePkg/Library/BaseMemoryLibRepStr/x64/SetMem16.asm b/MdePkg/Library/BaseMemoryLibRepStr/X64/SetMem16.asm
similarity index 100%
rename from MdePkg/Library/BaseMemoryLibRepStr/x64/SetMem16.asm
rename to MdePkg/Library/BaseMemoryLibRepStr/X64/SetMem16.asm
diff --git a/MdePkg/Library/BaseMemoryLibRepStr/x64/SetMem32.S b/MdePkg/Library/BaseMemoryLibRepStr/X64/SetMem32.S
similarity index 100%
rename from MdePkg/Library/BaseMemoryLibRepStr/x64/SetMem32.S
rename to MdePkg/Library/BaseMemoryLibRepStr/X64/SetMem32.S
diff --git a/MdePkg/Library/BaseMemoryLibRepStr/x64/SetMem32.asm b/MdePkg/Library/BaseMemoryLibRepStr/X64/SetMem32.asm
similarity index 100%
rename from MdePkg/Library/BaseMemoryLibRepStr/x64/SetMem32.asm
rename to MdePkg/Library/BaseMemoryLibRepStr/X64/SetMem32.asm
diff --git a/MdePkg/Library/BaseMemoryLibRepStr/x64/SetMem64.S b/MdePkg/Library/BaseMemoryLibRepStr/X64/SetMem64.S
similarity index 100%
rename from MdePkg/Library/BaseMemoryLibRepStr/x64/SetMem64.S
rename to MdePkg/Library/BaseMemoryLibRepStr/X64/SetMem64.S
diff --git a/MdePkg/Library/BaseMemoryLibRepStr/x64/SetMem64.asm b/MdePkg/Library/BaseMemoryLibRepStr/X64/SetMem64.asm
similarity index 100%
rename from MdePkg/Library/BaseMemoryLibRepStr/x64/SetMem64.asm
rename to MdePkg/Library/BaseMemoryLibRepStr/X64/SetMem64.asm
diff --git a/MdePkg/Library/BaseMemoryLibRepStr/x64/ZeroMem.S b/MdePkg/Library/BaseMemoryLibRepStr/X64/ZeroMem.S
similarity index 100%
rename from MdePkg/Library/BaseMemoryLibRepStr/x64/ZeroMem.S
rename to MdePkg/Library/BaseMemoryLibRepStr/X64/ZeroMem.S
diff --git a/MdePkg/Library/BaseMemoryLibRepStr/x64/ZeroMem.asm b/MdePkg/Library/BaseMemoryLibRepStr/X64/ZeroMem.asm
similarity index 100%
rename from MdePkg/Library/BaseMemoryLibRepStr/x64/ZeroMem.asm
rename to MdePkg/Library/BaseMemoryLibRepStr/X64/ZeroMem.asm