diff --git a/EdkCompatibilityPkg/Foundation/Library/RuntimeDxe/EfiRuntimeLib/x64/Fvb.c b/EdkCompatibilityPkg/Foundation/Library/RuntimeDxe/EfiRuntimeLib/X64/Fvb.c
similarity index 100%
rename from EdkCompatibilityPkg/Foundation/Library/RuntimeDxe/EfiRuntimeLib/x64/Fvb.c
rename to EdkCompatibilityPkg/Foundation/Library/RuntimeDxe/EfiRuntimeLib/X64/Fvb.c
diff --git a/EdkCompatibilityPkg/Foundation/Library/RuntimeDxe/EfiRuntimeLib/x64/IoLib.c b/EdkCompatibilityPkg/Foundation/Library/RuntimeDxe/EfiRuntimeLib/X64/IoLib.c
similarity index 100%
rename from EdkCompatibilityPkg/Foundation/Library/RuntimeDxe/EfiRuntimeLib/x64/IoLib.c
rename to EdkCompatibilityPkg/Foundation/Library/RuntimeDxe/EfiRuntimeLib/X64/IoLib.c
diff --git a/EdkCompatibilityPkg/Foundation/Library/RuntimeDxe/EfiRuntimeLib/x64/Lock.c b/EdkCompatibilityPkg/Foundation/Library/RuntimeDxe/EfiRuntimeLib/X64/Lock.c
similarity index 100%
rename from EdkCompatibilityPkg/Foundation/Library/RuntimeDxe/EfiRuntimeLib/x64/Lock.c
rename to EdkCompatibilityPkg/Foundation/Library/RuntimeDxe/EfiRuntimeLib/X64/Lock.c
diff --git a/EdkCompatibilityPkg/Foundation/Library/RuntimeDxe/EfiRuntimeLib/x64/PlatformIoLib.c b/EdkCompatibilityPkg/Foundation/Library/RuntimeDxe/EfiRuntimeLib/X64/PlatformIoLib.c
similarity index 100%
rename from EdkCompatibilityPkg/Foundation/Library/RuntimeDxe/EfiRuntimeLib/x64/PlatformIoLib.c
rename to EdkCompatibilityPkg/Foundation/Library/RuntimeDxe/EfiRuntimeLib/X64/PlatformIoLib.c
diff --git a/EdkCompatibilityPkg/Foundation/Library/RuntimeDxe/EfiRuntimeLib/x64/RuntimeLib.c b/EdkCompatibilityPkg/Foundation/Library/RuntimeDxe/EfiRuntimeLib/X64/RuntimeLib.c
similarity index 100%
rename from EdkCompatibilityPkg/Foundation/Library/RuntimeDxe/EfiRuntimeLib/x64/RuntimeLib.c
rename to EdkCompatibilityPkg/Foundation/Library/RuntimeDxe/EfiRuntimeLib/X64/RuntimeLib.c
diff --git a/EdkCompatibilityPkg/Foundation/Library/RuntimeDxe/EfiRuntimeLib/x64/RuntimeLibAsm.S b/EdkCompatibilityPkg/Foundation/Library/RuntimeDxe/EfiRuntimeLib/X64/RuntimeLibAsm.S
similarity index 100%
rename from EdkCompatibilityPkg/Foundation/Library/RuntimeDxe/EfiRuntimeLib/x64/RuntimeLibAsm.S
rename to EdkCompatibilityPkg/Foundation/Library/RuntimeDxe/EfiRuntimeLib/X64/RuntimeLibAsm.S
diff --git a/EdkCompatibilityPkg/Foundation/Library/RuntimeDxe/EfiRuntimeLib/x64/RuntimeLibAsm.asm b/EdkCompatibilityPkg/Foundation/Library/RuntimeDxe/EfiRuntimeLib/X64/RuntimeLibAsm.asm
similarity index 100%
rename from EdkCompatibilityPkg/Foundation/Library/RuntimeDxe/EfiRuntimeLib/x64/RuntimeLibAsm.asm
rename to EdkCompatibilityPkg/Foundation/Library/RuntimeDxe/EfiRuntimeLib/X64/RuntimeLibAsm.asm