diff --git a/site/posts/2020-12-07-parsing-id3-tags.md b/site/posts/2020-12-07-parsing-id3-tags.md
index 58b6120..d345cf0 100644
--- a/site/posts/2020-12-07-parsing-id3-tags.md
+++ b/site/posts/2020-12-07-parsing-id3-tags.md
@@ -238,6 +238,7 @@ def parse_frames(
         _encryption::size(1),
         _unsynchronized::size(1),
         _has_data_length_indicator::size(1),
+		_unused::size(1),
         rest::binary
       >>,
       tag_length_remaining,
@@ -411,7 +412,7 @@ There are also the many, many frames which we have not specifically handled. Eve
 ```elixir
 def decode_frame(id, frame_size, rest) do
   cond do
-    Regex.match?(~r/^T[0-9A-Z]$/, id) ->
+    Regex.match?(~r/^T[0-9A-Z]+$/, id) ->
 	  decode_text_frame(id, frame_size, rest)
 
 	id in @declared_frame_ids ->