diff --git a/blobby/CHANGELOG.md b/blobby/CHANGELOG.md
index b7bcfce8..6fcb6df0 100644
--- a/blobby/CHANGELOG.md
+++ b/blobby/CHANGELOG.md
@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## 0.4.1 (UNRELEASED)
+### Changed
+- Don't `PlaceMention` an uninitialized local in `parse_into_structs` ([#1588])
+
+[#1588]: https://github.com/RustCrypto/utils/pull/1588
+
 ## 0.4.0 (2025-10-08)
 ### Changed
 - Edition changed to 2024 and MSRV bumped to 1.85 ([#1149])
diff --git a/blobby/src/decode.rs b/blobby/src/decode.rs
index 8331746f..66c2b123 100644
--- a/blobby/src/decode.rs
+++ b/blobby/src/decode.rs
@@ -253,8 +253,11 @@ macro_rules! parse_into_structs {
                 }
             }
 
+            // TODO: use `${count(field)}` on stabilization of `macro_metavar_expr`:
+            // https://github.com/rust-lang/rust/issues/83527
             const ITEM_FIELDS: usize = 0 $( + {
-                let $field: (); let _ = $field;
+                let $field = ();
+                let _ = $field;
                 1
             })*;