diff --git a/EdkCompatibilityPkg/EdkCompatibilityPkg.dsc b/EdkCompatibilityPkg/EdkCompatibilityPkg.dsc
index df258c4221..44dcbd6b14 100644
--- a/EdkCompatibilityPkg/EdkCompatibilityPkg.dsc
+++ b/EdkCompatibilityPkg/EdkCompatibilityPkg.dsc
@@ -72,13 +72,13 @@ define GCC_MACRO                 = -DEFI_SPECIFICATION_VERSION=0x00020000 -DPI_S
 
 [BuildOptions]
   GCC:*_*_IA32_CC_FLAGS     = -DEFI32 $(GCC_MACRO)
-  GCC:*_*_IA32_ASM_FLAGS    = -DEFI32
+  GCC:*_*_IA32_ASM_FLAGS    =
   GCC:*_*_IA32_VFRPP_FLAGS  = -DEFI32 $(GCC_MACRO)
   GCC:*_*_IA32_APP_FLAGS    = -DEFI32 $(GCC_MACRO)
   GCC:*_*_IA32_PP_FLAGS     = -DEFI32 $(GCC_MACRO)
 
   GCC:*_*_X64_CC_FLAGS      = -DEFIX64 $(GCC_MACRO)
-  GCC:*_*_X64_ASM_FLAGS     = -DEFIX64
+  GCC:*_*_X64_ASM_FLAGS     =
   GCC:*_*_X64_VFRPP_FLAGS   = -DEFIX64 $(GCC_MACRO)
   GCC:*_*_X64_APP_FLAGS     = -DEFIX64 $(GCC_MACRO)
   GCC:*_*_X64_PP_FLAGS      = -DEFIX64 $(GCC_MACRO)