diff --git a/MdePkg/Library/BaseLib/BaseLib.msa b/MdePkg/Library/BaseLib/BaseLib.msa
index cb0c0084b0..fc2b1dab7c 100644
--- a/MdePkg/Library/BaseLib/BaseLib.msa
+++ b/MdePkg/Library/BaseLib/BaseLib.msa
@@ -415,8 +415,8 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
X64/CpuId.asm
X64/CpuIdEx.asm
X64/ReadEflags.asm
- X64/ReadMsr64.c
- X64/WriteMsr64.c
+ X64/ReadMsr64.c
+ X64/WriteMsr64.c
X64/ReadCr0.asm
X64/ReadCr2.asm
X64/ReadCr3.asm
@@ -481,8 +481,8 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
X64/Wbinvd.asm
X64/Invd.asm
X64/FlushCacheLine.asm
- X64/InterlockedIncrement.c
- X64/InterlockedDecrement.c
+ X64/InterlockedIncrement.c
+ X64/InterlockedDecrement.c
X64/InterlockedCompareExchange32.asm
X64/InterlockedCompareExchange64.asm
X64/EnableInterrupts.asm
@@ -490,7 +490,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
X64/EnableDisableInterrupts.asm
X64/CpuSleep.asm
X64/CpuPause.asm
- X64/CpuBreakpoint.c
+ X64/CpuBreakpoint.c
X64/CpuFlushTlb.asm
X64/Thunk16.asm