diff --git a/dom/media/DecoderTraits.cpp b/dom/media/DecoderTraits.cpp
index 93c0b6caad9..71dde82879d 100644
--- a/dom/media/DecoderTraits.cpp
+++ b/dom/media/DecoderTraits.cpp
@@ -350,16 +350,10 @@ static bool
 IsMP4SupportedType(const nsACString& aType,
                    const nsAString& aCodecs = EmptyString())
 {
-// Currently on B2G, FMP4 is only working for MSE playback.
-// For other normal MP4, it still uses current omx decoder.
-// Bug 1061034 is a follow-up bug to enable all MP4s with MOZ_FMP4
-#ifdef MOZ_OMX_DECODER
-  return false;
-#else
+  // MP4Decoder/Reader is currently used for MSE and mp4 files local playback.
   bool haveAAC, haveMP3, haveH264;
   return Preferences::GetBool("media.fragmented-mp4.exposed", false) &&
          MP4Decoder::CanHandleMediaType(aType, aCodecs, haveAAC, haveH264, haveMP3);
-#endif
 }
 #endif
 
diff --git a/dom/media/fmp4/MP4Decoder.cpp b/dom/media/fmp4/MP4Decoder.cpp
index e3abc08bcd7..90b9fd7e2bb 100644
--- a/dom/media/fmp4/MP4Decoder.cpp
+++ b/dom/media/fmp4/MP4Decoder.cpp
@@ -209,7 +209,11 @@ IsAndroidAvailable()
 static bool
 IsGonkMP4DecoderAvailable()
 {
+#ifndef MOZ_GONK_MEDIACODEC
+  return false;
+#else
   return Preferences::GetBool("media.fragmented-mp4.gonk.enabled", false);
+#endif
 }
 
 static bool