diff --git a/MdePkg/Library/CpuLib/X64/CpuFlushTlb.S b/MdePkg/Library/CpuLib/X64/CpuFlushTlb.S
index 2dbaf846c4..3c799b735f 100644
--- a/MdePkg/Library/CpuLib/X64/CpuFlushTlb.S
+++ b/MdePkg/Library/CpuLib/X64/CpuFlushTlb.S
@@ -20,7 +20,7 @@
 #
 #------------------------------------------------------------------------------
 
-.global _CpuFlushTlb
+.global ASM_PFX(CpuFlushTlb)
 
 #------------------------------------------------------------------------------
 # VOID
@@ -29,7 +29,7 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-_CpuFlushTlb:
+ASM_PFX(CpuFlushTlb):
     mov     %cr3, %rax
     mov     %rax, %cr3
     ret
diff --git a/MdePkg/Library/CpuLib/X64/CpuPause.S b/MdePkg/Library/CpuLib/X64/CpuPause.S
index 0ecaa85b61..f71fdec354 100644
--- a/MdePkg/Library/CpuLib/X64/CpuPause.S
+++ b/MdePkg/Library/CpuLib/X64/CpuPause.S
@@ -28,7 +28,7 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-.global _CpuPause;
-_CpuPause:
+.global ASM_PFX(CpuPause)
+ASM_PFX(CpuPause):
     pause
     ret
diff --git a/MdePkg/Library/CpuLib/X64/CpuSleep.S b/MdePkg/Library/CpuLib/X64/CpuSleep.S
index 681e4c12c3..658cb1aeff 100644
--- a/MdePkg/Library/CpuLib/X64/CpuSleep.S
+++ b/MdePkg/Library/CpuLib/X64/CpuSleep.S
@@ -28,7 +28,7 @@
 #   VOID
 #   );
 #------------------------------------------------------------------------------
-.global _CpuSleep;
-_CpuSleep:
+.global ASM_PFX(CpuSleep)
+ASM_PFX(CpuSleep):
     hlt
     ret