--- a/dom/media/AccurateSeekTask.cpp
+++ b/dom/media/AccurateSeekTask.cpp
@@ -64,19 +64,16 @@ AccurateSeekTask::~AccurateSeekTask()
   MOZ_ASSERT(mIsDiscarded);
 }
 
 void
 AccurateSeekTask::Discard()
 {
   AssertOwnerThread();
 
-  // Disconnect MediaDecoder.
-  mSeekJob.RejectIfExists(__func__);
-
   // Disconnect MDSM.
   RejectIfExist(__func__);
 
   // Disconnect MediaDecoderReaderWrapper.
   mSeekRequest.DisconnectIfExists();
   CancelCallbacks();
 
   mIsDiscarded = true;

--- a/dom/media/MediaDecoderStateMachine.cpp
+++ b/dom/media/MediaDecoderStateMachine.cpp
@@ -1746,16 +1746,17 @@ MediaDecoderStateMachine::OnSeekTaskReje
 
   DiscardSeekTaskIfExist();
 }
 
 void
 MediaDecoderStateMachine::DiscardSeekTaskIfExist()
 {
   if (mSeekTask) {
+    mCurrentSeek.RejectIfExists(__func__);
     mSeekTask->Discard();
     mSeekTask = nullptr;
 
     // Reset the MediaDecoderReaderWrapper's callbask.
     SetMediaDecoderReaderWrapperCallback();
   }
 }
 

--- a/dom/media/NextFrameSeekTask.cpp
+++ b/dom/media/NextFrameSeekTask.cpp
@@ -47,19 +47,16 @@ NextFrameSeekTask::~NextFrameSeekTask()
   MOZ_ASSERT(mIsDiscarded);
 }
 
 void
 NextFrameSeekTask::Discard()
 {
   AssertOwnerThread();
 
-  // Disconnect MediaDecoder.
-  mSeekJob.RejectIfExists(__func__);
-
   // Disconnect MDSM.
   RejectIfExist(__func__);
 
   // Disconnect MediaDecoderReader.
   CancelCallbacks();
 
   mIsDiscarded = true;
 }