diff --git a/dom/media/platforms/wmf/WMFDecoderModule.cpp b/dom/media/platforms/wmf/WMFDecoderModule.cpp
index 64991b0e08..435ed740ea 100644
--- a/dom/media/platforms/wmf/WMFDecoderModule.cpp
+++ b/dom/media/platforms/wmf/WMFDecoderModule.cpp
@@ -6,7 +6,7 @@
 #include "WMF.h"
 #include "WMFDecoderModule.h"
 #include "WMFVideoMFTManager.h"
-#include "WMFVP9MFTManager.h"
+#include "WMFVP9DXVA2Manager.h"
 #include "WMFAudioMFTManager.h"
 #include "MFTDecoder.h"
 #include "mozilla/DebugOnly.h"
@@ -108,8 +108,8 @@ WMFDecoderModule::CreateVP9Decoder(const CreateDecoderParams& aParams)
   }
 
   if (dxva2Allowed) {
-    nsAutoPtr<WMFVP9MFTManager> vp9(
-      new WMFVP9MFTManager(aParams.VideoConfig(),
+    nsAutoPtr<WMFVP9DXVA2Manager> vp9(
+      new WMFVP9DXVA2Manager(aParams.VideoConfig(),
                            aParams.mKnowsCompositor,
                            aParams.mImageContainer));
     if (vp9->Init()) {
diff --git a/dom/media/platforms/wmf/WMFVP9MFTManager.cpp b/dom/media/platforms/wmf/WMFVP9DXVA2Manager.cpp
similarity index 92%
rename from dom/media/platforms/wmf/WMFVP9MFTManager.cpp
rename to dom/media/platforms/wmf/WMFVP9DXVA2Manager.cpp
index 96cad1cb42..f1e1baada1 100644
--- a/dom/media/platforms/wmf/WMFVP9MFTManager.cpp
+++ b/dom/media/platforms/wmf/WMFVP9DXVA2Manager.cpp
@@ -3,7 +3,7 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-#include "WMFVP9MFTManager.h"
+#include "WMFVP9DXVA2Manager.h"
 #include "WMFVideoMFTManager.h"
 #include "ImageContainer.h"
 #include "Layers.h"
@@ -22,12 +22,12 @@ struct VP9ShownFrame {
   bool mKeyframe;
 };
 
-WMFVP9MFTManager::WMFVP9MFTManager(const VideoInfo& aConfig,
+WMFVP9DXVA2Manager::WMFVP9DXVA2Manager(const VideoInfo& aConfig,
     layers::KnowsCompositor* aCompositor, layers::ImageContainer* aContainer)
   : mVideoInfo(aConfig), mKnowsCompositor(aCompositor), mImageContainer(aContainer), mIsValid(false)
 {}
-WMFVP9MFTManager::~WMFVP9MFTManager() { Shutdown(); }
-bool WMFVP9MFTManager::Init()
+WMFVP9DXVA2Manager::~WMFVP9DXVA2Manager() { Shutdown(); }
+bool WMFVP9DXVA2Manager::Init()
 {
   if (!IsVistaOrLater()) {
     mFailureReason.AssignLiteral("VP9 DXVA2 requires Windows Vista or later");
@@ -79,7 +79,7 @@ bool WMFVP9MFTManager::Init()
   mFailureReason.AssignLiteral("Using VP9 DXVA2 profile 0");
   return true;
 }
-HRESULT WMFVP9MFTManager::Input(MediaRawData* aSample)
+HRESULT WMFVP9DXVA2Manager::Input(MediaRawData* aSample)
 {
   if (!mIsValid) { return E_UNEXPECTED; }
   if (!aSample || aSample->Size() > UINT32_MAX) { return E_INVALIDARG; }
@@ -129,7 +129,7 @@ HRESULT WMFVP9MFTManager::Input(MediaRawData* aSample)
   }
   return S_OK;
 }
-HRESULT WMFVP9MFTManager::Output(int64_t, RefPtr<MediaData>& aOutput)
+HRESULT WMFVP9DXVA2Manager::Output(int64_t, RefPtr<MediaData>& aOutput)
 {
   aOutput = nullptr;
   if (mPendingFrames.IsEmpty()) { return MF_E_TRANSFORM_NEED_MORE_INPUT; }
@@ -137,20 +137,20 @@ HRESULT WMFVP9MFTManager::Output(int64_t, RefPtr<MediaData>& aOutput)
   mPendingFrames.RemoveElementAt(0);
   return S_OK;
 }
-void WMFVP9MFTManager::Flush()
+void WMFVP9DXVA2Manager::Flush()
 {
   mPendingFrames.Clear();
   mSeekTargetThreshold.reset();
   if (mVP9Decoder) { mVP9Decoder->Flush(); }
 }
-void WMFVP9MFTManager::Shutdown()
+void WMFVP9DXVA2Manager::Shutdown()
 {
   mPendingFrames.Clear();
   mVP9Decoder = nullptr;
   if (mDXVA2Manager) { DeleteOnMainThread(mDXVA2Manager); }
   mIsValid = false;
 }
-bool WMFVP9MFTManager::IsHardwareAccelerated(nsACString& aReason) const
+bool WMFVP9DXVA2Manager::IsHardwareAccelerated(nsACString& aReason) const
 {
   aReason = mFailureReason;
   return mIsValid;
diff --git a/dom/media/platforms/wmf/WMFVP9MFTManager.h b/dom/media/platforms/wmf/WMFVP9DXVA2Manager.h
similarity index 84%
rename from dom/media/platforms/wmf/WMFVP9MFTManager.h
rename to dom/media/platforms/wmf/WMFVP9DXVA2Manager.h
index 2f890f8f7d..e594b33b2c 100644
--- a/dom/media/platforms/wmf/WMFVP9MFTManager.h
+++ b/dom/media/platforms/wmf/WMFVP9DXVA2Manager.h
@@ -3,8 +3,8 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-#ifndef WMFVP9MFTManager_h_
-#define WMFVP9MFTManager_h_
+#ifndef WMFVP9DXVA2Manager_h_
+#define WMFVP9DXVA2Manager_h_
 #include "WMF.h"
 #include "WMFMediaDataDecoder.h"
 #include "DXVA2Manager.h"
@@ -12,10 +12,10 @@
 #include "MediaInfo.h"
 #include "nsTArray.h"
 namespace mozilla {
-class WMFVP9MFTManager : public MFTManager {
+class WMFVP9DXVA2Manager : public MFTManager {
 public:
-  WMFVP9MFTManager(const VideoInfo&, layers::KnowsCompositor*, layers::ImageContainer*);
-  ~WMFVP9MFTManager();
+  WMFVP9DXVA2Manager(const VideoInfo&, layers::KnowsCompositor*, layers::ImageContainer*);
+  ~WMFVP9DXVA2Manager();
   bool Init();
   HRESULT Input(MediaRawData*) override;
   HRESULT Output(int64_t, RefPtr<MediaData>&) override;
diff --git a/dom/media/platforms/wmf/moz.build b/dom/media/platforms/wmf/moz.build
index 75b706c81a..0e3d5d0965 100644
--- a/dom/media/platforms/wmf/moz.build
+++ b/dom/media/platforms/wmf/moz.build
@@ -15,7 +15,7 @@ EXPORTS += [
     'WMFMediaDataDecoder.h',
     'WMFUtils.h',
     'WMFVideoMFTManager.h',
-    'WMFVP9MFTManager.h',
+    'WMFVP9DXVA2Manager.h',
 ]
 
 UNIFIED_SOURCES += [
@@ -31,7 +31,7 @@ SOURCES += [
     'DXVAVP9Manager.cpp',
     'VP9HeaderParser.cpp',
     'WMFUtils.cpp',
-    'WMFVP9MFTManager.cpp',
+    'WMFVP9DXVA2Manager.cpp',
 ]
 
 include('/ipc/chromium/chromium-config.mozbuild')