diff --git a/xen/include/asm-x86/hvm/vmx/vmx.h b/xen/include/asm-x86/hvm/vmx/vmx.h
index 3c34cdf8ac..864b393e9d 100644
--- a/xen/include/asm-x86/hvm/vmx/vmx.h
+++ b/xen/include/asm-x86/hvm/vmx/vmx.h
@@ -61,8 +61,7 @@ extern unsigned int cpu_rev;
     CPU_BASED_MWAIT_EXITING | \
     CPU_BASED_MOV_DR_EXITING | \
     CPU_BASED_ACTIVATE_IO_BITMAP | \
-    CPU_BASED_USE_TSC_OFFSETING  | \
-    CPU_BASED_UNCOND_IO_EXITING \
+    CPU_BASED_USE_TSC_OFFSETING  \
     )
 
 #define MONITOR_CPU_BASED_EXEC_CONTROLS_IA32E_MODE \