diff --git a/implementations/rust/oo/src/packed/reader.rs b/implementations/rust/oo/src/packed/reader.rs
index ef86ca5..de30e6d 100644
--- a/implementations/rust/oo/src/packed/reader.rs
+++ b/implementations/rust/oo/src/packed/reader.rs
@@ -467,7 +467,11 @@ impl<'de, 'src, S: BinarySource<'de>> Reader<'de> for PackedReader<'de, 'src, S>
     }
 
     fn open_annotation(&mut self) -> ReaderResult<()> {
-        self.next_compound(Tag::Annotation, ExpectedKind::Annotation)
+        if let Tag::Annotation = Tag::try_from(self.peek_noeof()?)? {
+            Ok(self.skip()?)
+        } else {
+            Err(error::Error::Expected(ExpectedKind::Annotation))
+        }
     }
 
     fn close_annotation(&mut self) -> ReaderResult<()> {