diff --git a/src/host/ut_host/VtIoTests.cpp b/src/host/ut_host/VtIoTests.cpp
index 703e973eb2..c87256acfe 100644
--- a/src/host/ut_host/VtIoTests.cpp
+++ b/src/host/ut_host/VtIoTests.cpp
@@ -6,11 +6,11 @@
 #include "../../inc/consoletaeftemplates.hpp"
 #include "../../types/inc/Viewport.hpp"
 
+#include "../VtIo.hpp"
+#include "../../interactivity/inc/ServiceLocator.hpp"
+#include "../../renderer/base/Renderer.hpp"
 #include "../../renderer/vt/Xterm256Engine.hpp"
 #include "../../renderer/vt/XtermEngine.hpp"
-#include "../../renderer/base/Renderer.hpp"
-#include "../Settings.hpp"
-#include "../VtIo.hpp"
 
 #if TIL_FEATURE_CONHOSTDXENGINE_ENABLED
 #include "../../renderer/dx/DxRenderer.hpp"
@@ -19,7 +19,7 @@
 using namespace WEX::Common;
 using namespace WEX::Logging;
 using namespace WEX::TestExecution;
-using namespace std;
+using namespace Microsoft::Console::Interactivity;
 
 class Microsoft::Console::VirtualTerminal::VtIoTests
 {
@@ -473,6 +473,13 @@ void VtIoTests::BasicAnonymousPipeOpeningWithSignalChannelTest()
 
     Log::Comment(L"\tinitializing vtio");
 
+    // CreateIoHandlers() assert()s on IsConsoleLocked() to guard against a race condition.
+    auto& gci = ServiceLocator::LocateGlobals().getConsoleInformation();
+    gci.LockConsole();
+    const auto cleanup = wil::scope_exit([&]() {
+        gci.UnlockConsole();
+    });
+
     VtIo vtio;
     VERIFY_IS_FALSE(vtio.IsUsingVt());
     VERIFY_ARE_EQUAL(nullptr, vtio._pPtySignalInputThread);