diff --git a/lib/membrane_mp4/muxer/isom.ex b/lib/membrane_mp4/muxer/isom.ex
index 7fade3e..540f792 100644
--- a/lib/membrane_mp4/muxer/isom.ex
+++ b/lib/membrane_mp4/muxer/isom.ex
@@ -117,7 +117,7 @@ defmodule Membrane.MP4.Muxer.ISOM do
        %Membrane.H264{stream_structure: {:avc3, _dcr2}}} ->
         state
 
-      {%Membrane.H265{}, %Membrane.H265{}} ->
+      {%Membrane.H265{stream_structure: {:hev1, _dcr1}}, %Membrane.H265{stream_structure: {:hev1, _dcr2}}} ->
         state
 
       # Otherwise we can assume that output will be corrupted