diff --git a/wavinfo/riff_parser.py b/wavinfo/riff_parser.py
index 08c2e93..5a0d523 100644
--- a/wavinfo/riff_parser.py
+++ b/wavinfo/riff_parser.py
@@ -56,7 +56,7 @@ def parse_chunk(stream, rf64_context=None):
     data_size = struct.unpack('<I', size_bytes)[0]
 
     if data_size == 0xFFFFFFFF:
-        if rf64_context is None and ident == b'RF64':
+        if rf64_context is None and ident in [b'RF64', b'BW64']:
             rf64_context = parse_rf64(stream=stream)
 
         data_size = rf64_context.bigchunk_table[ident]
@@ -65,7 +65,7 @@ def parse_chunk(stream, rf64_context=None):
     if (displacement % 2) != 0:
         displacement = displacement + 1
 
-    if ident in [b'RIFF', b'LIST', b'RF64']:
+    if ident in [b'RIFF', b'LIST', b'RF64', b'BW64']:
         return parse_list_chunk(stream=stream, length=data_size, rf64_context=rf64_context)
     else:
         data_start = stream.tell()