From 48f95f0cb4cae14377c5f944b38bf12643441b48 Mon Sep 17 00:00:00 2001
From: Paul Higinbotham <paulhi@microsoft.com>
Date: Mon, 18 Nov 2019 19:09:07 -0800
Subject: [PATCH] Fix null reference in SupportsVirtualTerminal property
 (#11105)

---
 .../engine/hostifaces/InternalHostUserInterface.cs              | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/System.Management.Automation/engine/hostifaces/InternalHostUserInterface.cs b/src/System.Management.Automation/engine/hostifaces/InternalHostUserInterface.cs
index acfd0b5a1e..366a76902c 100644
--- a/src/System.Management.Automation/engine/hostifaces/InternalHostUserInterface.cs
+++ b/src/System.Management.Automation/engine/hostifaces/InternalHostUserInterface.cs
@@ -80,7 +80,7 @@ namespace System.Management.Automation.Internal.Host
 
         public override bool SupportsVirtualTerminal
         {
-            get { return _externalUI.SupportsVirtualTerminal; }
+            get { return (_externalUI != null) ? _externalUI.SupportsVirtualTerminal : false; }
         }
 
         /// <summary>