Index: MdePkg/Library/BaseLib/Ia32/CpuIdEx.S
===================================================================
--- MdePkg/Library/BaseLib/Ia32/CpuIdEx.S	(revision 14114)
+++ MdePkg/Library/BaseLib/Ia32/CpuIdEx.S	(working copy)
@@ -21,7 +21,6 @@
 #
 #------------------------------------------------------------------------------
 
-    .686:
     .code:
 
 #------------------------------------------------------------------------------
Index: MdePkg/Library/BaseLib/Ia32/MultU64x32.S
===================================================================
--- MdePkg/Library/BaseLib/Ia32/MultU64x32.S	(revision 14114)
+++ MdePkg/Library/BaseLib/Ia32/MultU64x32.S	(working copy)
@@ -19,7 +19,6 @@
 #
 #------------------------------------------------------------------------------
 
-    .386:
     .code:
 
 ASM_GLOBAL ASM_PFX(InternalMathMultU64x32)
Index: MdePkg/Library/BaseLib/Ia32/RShiftU64.S
===================================================================
--- MdePkg/Library/BaseLib/Ia32/RShiftU64.S	(revision 14114)
+++ MdePkg/Library/BaseLib/Ia32/RShiftU64.S	(working copy)
@@ -19,7 +19,6 @@
 #
 #------------------------------------------------------------------------------
 
-    .686:
     .code:
 
 ASM_GLOBAL ASM_PFX(InternalMathRShiftU64)