diff --git a/ArmPlatformPkg/PrePi/AArch64/ModuleEntryPoint.S b/ArmPlatformPkg/PrePi/AArch64/ModuleEntryPoint.S
index 2c4a7e5324..0d0e3e17c1 100644
--- a/ArmPlatformPkg/PrePi/AArch64/ModuleEntryPoint.S
+++ b/ArmPlatformPkg/PrePi/AArch64/ModuleEntryPoint.S
@@ -24,10 +24,10 @@ GCC_ASM_IMPORT(ArmReadMpidr)
 GCC_ASM_IMPORT(ArmPlatformPeiBootAction)
 GCC_ASM_IMPORT(ArmPlatformStackSet)
 GCC_ASM_EXPORT(_ModuleEntryPoint)
-GCC_ASM_EXPORT(mSystemMemoryEnd)
+ASM_GLOBAL ASM_PFX(mSystemMemoryEnd)
 
-StartupAddr:       .8byte ASM_PFX(CEntryPoint)
-mSystemMemoryEnd:  .8byte 0
+StartupAddr:                  .8byte ASM_PFX(CEntryPoint)
+ASM_PFX(mSystemMemoryEnd):    .8byte 0
 
 ASM_PFX(_ModuleEntryPoint):
   // Do early platform specific actions