diff --git a/MdeModulePkg/Universal/Acpi/BootScriptExecutorDxe/IA32/S3Asm.asm b/MdeModulePkg/Universal/Acpi/BootScriptExecutorDxe/IA32/S3Asm.asm
index a040517aad..2fc14a1e28 100644
--- a/MdeModulePkg/Universal/Acpi/BootScriptExecutorDxe/IA32/S3Asm.asm
+++ b/MdeModulePkg/Universal/Acpi/BootScriptExecutorDxe/IA32/S3Asm.asm
@@ -17,8 +17,8 @@
     .model  flat,C
     .code
 
-EXTERNDEF   AsmFixAddress16:DWORD
-EXTERNDEF   AsmJmpAddr32:DWORD
+PUBLIC   AsmFixAddress16
+PUBLIC   AsmJmpAddr32
    
 ;-----------------------------------------
 ;VOID
diff --git a/MdeModulePkg/Universal/Acpi/BootScriptExecutorDxe/X64/S3Asm.asm b/MdeModulePkg/Universal/Acpi/BootScriptExecutorDxe/X64/S3Asm.asm
index b2d85ae94f..4422f22fe7 100644
--- a/MdeModulePkg/Universal/Acpi/BootScriptExecutorDxe/X64/S3Asm.asm
+++ b/MdeModulePkg/Universal/Acpi/BootScriptExecutorDxe/X64/S3Asm.asm
@@ -19,8 +19,8 @@ EXTERN PageFaultHandler:PROC
 
     .code
     
-EXTERNDEF   AsmFixAddress16:DWORD
-EXTERNDEF   AsmJmpAddr32:DWORD
+PUBLIC   AsmFixAddress16
+PUBLIC   AsmJmpAddr32
     
 AsmTransferControl  PROC
     ; rcx S3WakingVector    :DWORD