--- a/media/libstagefright/binding/MP4Metadata.cpp
+++ b/media/libstagefright/binding/MP4Metadata.cpp
@@ -417,17 +417,18 @@ MP4Metadata::Crypto() const
 
   return crypto;
 }
 
 mozilla::UniquePtr<IndiceWrapper>
 MP4Metadata::GetTrackIndice(mozilla::TrackID aTrackID)
 {
   FallibleTArray<Index::Indice> indiceSF;
-  if(!mStagefright->ReadTrackIndex(indiceSF, aTrackID)) {
+  if ((!mPreferRust || mRustTestMode) &&
+       !mStagefright->ReadTrackIndex(indiceSF, aTrackID)) {
     return nullptr;
   }
 
   mp4parse_byte_data indiceRust = {};
   if ((mPreferRust || mRustTestMode) &&
       !mRust->ReadTrackIndice(&indiceRust, aTrackID)) {
     return nullptr;
   }