diff --git a/media/engine/simulcast_encoder_adapter.cc b/media/engine/simulcast_encoder_adapter.cc
index db36b73..7d3329f 100644
--- a/media/engine/simulcast_encoder_adapter.cc
+++ b/media/engine/simulcast_encoder_adapter.cc
@@ -441,6 +441,7 @@
         parent, std::move(encoder_context),
         std::make_unique<FramerateController>(stream_codec.maxFramerate),
         stream_idx, stream_codec.width, stream_codec.height, is_paused);
+    encoder_context = nullptr;
   }
 
   // To save memory, don't store encoders that we don't use.