diff --git a/MdeModulePkg/Universal/DebugSupportDxe/X64/AsmFuncs.S b/MdeModulePkg/Universal/DebugSupportDxe/X64/AsmFuncs.S
index 7ac8a1a69a..7c854c1c88 100644
--- a/MdeModulePkg/Universal/DebugSupportDxe/X64/AsmFuncs.S
+++ b/MdeModulePkg/Universal/DebugSupportDxe/X64/AsmFuncs.S
@@ -296,10 +296,10 @@ ExtraPushDone:
 ## UINT64  Gdtr[2], Idtr[2];
                 push    0
                 push    0
-                sidt    qword ptr [rsp]
+                sidt    [rsp]
                 push    0
                 push    0
-                sgdt    qword ptr [rsp]
+                sgdt    [rsp]
 
 ## UINT64  Ldtr, Tr;
                 xor     rax, rax