diff --git a/xen/arch/x86/x86_emulate/x86_emulate.c b/xen/arch/x86/x86_emulate/x86_emulate.c
index c9cf30b443..c5443dd3ec 100644
--- a/xen/arch/x86/x86_emulate/x86_emulate.c
+++ b/xen/arch/x86/x86_emulate/x86_emulate.c
@@ -2461,8 +2461,8 @@ x86_emulate(
         else
         {
             generate_exception_if(!n, X86_EXC_DE);
-            _regs.al = _regs.al % n;
             _regs.ah = _regs.al / n;
+            _regs.al = _regs.al % n;
         }
         _regs.eflags &= ~(X86_EFLAGS_SF | X86_EFLAGS_ZF | X86_EFLAGS_PF);
         _regs.eflags |= !_regs.al ? X86_EFLAGS_ZF : 0;