diff --git a/MdeModulePkg/Universal/EbcDxe/X64/EbcLowLevel.S b/MdeModulePkg/Universal/EbcDxe/X64/EbcLowLevel.S
index acebb63a77..e7bda2f5e3 100644
--- a/MdeModulePkg/Universal/EbcDxe/X64/EbcLowLevel.S
+++ b/MdeModulePkg/Universal/EbcDxe/X64/EbcLowLevel.S
@@ -86,6 +86,7 @@ ASM_PFX(EbcLLCALLEXNative):
 #
 ASM_GLOBAL ASM_PFX(EbcLLGetEbcEntryPoint);
 ASM_PFX(EbcLLGetEbcEntryPoint):
+    mov    %r10, %rax
     ret
 
 #/*++
diff --git a/MdeModulePkg/Universal/EbcDxe/X64/EbcSupport.c b/MdeModulePkg/Universal/EbcDxe/X64/EbcSupport.c
index 6c0428d9cc..ef4b4c4c0d 100644
--- a/MdeModulePkg/Universal/EbcDxe/X64/EbcSupport.c
+++ b/MdeModulePkg/Universal/EbcDxe/X64/EbcSupport.c
@@ -412,7 +412,7 @@ EbcCreateThunks (
 
   //
   // Add code bytes to load up a processor register with the EBC entry point.
-  // mov r10, 123456789abcdef0h  => 48 B8 F0 DE BC 9A 78 56 34 12
+  // mov r10, 123456789abcdef0h  => 49 BA F0 DE BC 9A 78 56 34 12
   // The first 8 bytes of the thunk entry is the address of the EBC
   // entry point.
   //