diff --git a/dom/media/MediaDecoder.cpp b/dom/media/MediaDecoder.cpp
index ab644627e085..8c9a26c99384 100644
--- a/dom/media/MediaDecoder.cpp
+++ b/dom/media/MediaDecoder.cpp
@@ -386,16 +386,11 @@ void
 MediaDecoder::StartDormantTimer()
 {
   MOZ_ASSERT(NS_IsMainThread());
-  if (!IsHeuristicDormantSupported()) {
-    return;
-  }
 
-  if (mIsHeuristicDormant ||
-      IsShutdown() ||
+  if (!IsHeuristicDormantSupported() ||
+      mIsHeuristicDormant ||
       mIsVisible ||
-      (mPlayState != PLAY_STATE_PAUSED &&
-       !IsEnded()))
-  {
+      (mPlayState != PLAY_STATE_PAUSED && !IsEnded())) {
     return;
   }