diff --git a/renderdoc/driver/d3d11/d3d11_device.cpp b/renderdoc/driver/d3d11/d3d11_device.cpp
index e9c52e865..f07006727 100644
--- a/renderdoc/driver/d3d11/d3d11_device.cpp
+++ b/renderdoc/driver/d3d11/d3d11_device.cpp
@@ -336,6 +336,7 @@ WrappedID3D11Device::WrappedID3D11Device(ID3D11Device *realDevice, D3D11InitPara
   m_Alive = true;
 
   m_DummyInfoQueue.m_pDevice = this;
+  m_DummyD3D10Multithread.m_pDevice = this;
   m_DummyDebug.m_pDevice = this;
   m_WrappedDebug.m_pDevice = this;
 
@@ -530,6 +531,18 @@ void WrappedID3D11Device::CheckForDeath()
   }
 }
 
+ULONG STDMETHODCALLTYPE DummyID3D10Multithread::AddRef()
+{
+  m_pDevice->AddRef();
+  return 1;
+}
+
+ULONG STDMETHODCALLTYPE DummyID3D10Multithread::Release()
+{
+  m_pDevice->Release();
+  return 1;
+}
+
 ULONG STDMETHODCALLTYPE DummyID3D11InfoQueue::AddRef()
 {
   m_pDevice->AddRef();
@@ -750,6 +763,15 @@ HRESULT WrappedID3D11Device::QueryInterface(REFIID riid, void **ppvObject)
       return E_NOINTERFACE;
     }
   }
+  else if(riid == __uuidof(ID3D10Multithread))
+  {
+    RDCWARN(
+        "Returning a dummy ID3D10Multithread that does nothing. This ID3D10Multithread will not "
+        "work!");
+    *ppvObject = (ID3D10Multithread *)&m_DummyD3D10Multithread;
+    m_DummyD3D10Multithread.AddRef();
+    return S_OK;
+  }
   else if(riid == ID3D11ShaderTraceFactory_uuid)
   {
     RDCWARN("Trying to get ID3D11ShaderTraceFactory. Not supported at this time.");
diff --git a/renderdoc/driver/d3d11/d3d11_device.h b/renderdoc/driver/d3d11/d3d11_device.h
index 8ec2b3c99..cbb42099f 100644
--- a/renderdoc/driver/d3d11/d3d11_device.h
+++ b/renderdoc/driver/d3d11/d3d11_device.h
@@ -75,6 +75,47 @@ struct D3D11InitParams : public RDCInitParams
 class WrappedID3D11Device;
 class WrappedShader;
 
+// declare this here as we don't want to pull in the whole D3D10 headers
+MIDL_INTERFACE("9B7E4E00-342C-4106-A19F-4F2704F689F0")
+ID3D10Multithread : public IUnknown
+{
+public:
+  virtual void STDMETHODCALLTYPE Enter(void) = 0;
+
+  virtual void STDMETHODCALLTYPE Leave(void) = 0;
+
+  virtual BOOL STDMETHODCALLTYPE SetMultithreadProtected(
+      /* [annotation] */
+      _In_ BOOL bMTProtect) = 0;
+
+  virtual BOOL STDMETHODCALLTYPE GetMultithreadProtected(void) = 0;
+};
+
+struct DummyID3D10Multithread : public ID3D10Multithread
+{
+  WrappedID3D11Device *m_pDevice;
+
+  DummyID3D10Multithread() : m_pDevice(NULL) {}
+  //////////////////////////////
+  // implement IUnknown
+  HRESULT STDMETHODCALLTYPE QueryInterface(REFIID riid, void **ppvObject) { return E_NOINTERFACE; }
+  ULONG STDMETHODCALLTYPE AddRef();
+  ULONG STDMETHODCALLTYPE Release();
+
+  //////////////////////////////
+  // implement ID3D10Multithread
+  virtual void STDMETHODCALLTYPE Enter(void) { return; }
+  virtual void STDMETHODCALLTYPE Leave(void) { return; }
+  virtual BOOL STDMETHODCALLTYPE SetMultithreadProtected(
+      /* [annotation] */
+      _In_ BOOL bMTProtect)
+  {
+    return TRUE;
+  }
+
+  virtual BOOL STDMETHODCALLTYPE GetMultithreadProtected(void) { return TRUE; }
+};
+
 // We can pass through all calls to ID3D11Debug without intercepting, this
 // struct isonly here so that we can intercept QueryInterface calls to return
 // ID3D11InfoQueue
@@ -280,6 +321,7 @@ private:
 
   D3D11Replay m_Replay;
 
+  DummyID3D10Multithread m_DummyD3D10Multithread;
   DummyID3D11InfoQueue m_DummyInfoQueue;
   DummyID3D11Debug m_DummyDebug;
   WrappedID3D11Debug m_WrappedDebug;