From b8f27b73adb1f90532e112d257edd2036d48b191 Mon Sep 17 00:00:00 2001
From: Dan Cline <6798349+Rjected@users.noreply.github.com>
Date: Thu, 29 Jan 2026 23:05:32 +0000
Subject: [PATCH] chore: fix unused parallel trie const without std (#21610)

---
 crates/trie/sparse/src/state.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/crates/trie/sparse/src/state.rs b/crates/trie/sparse/src/state.rs
index e257b5f501..3a52adda3b 100644
--- a/crates/trie/sparse/src/state.rs
+++ b/crates/trie/sparse/src/state.rs
@@ -994,6 +994,7 @@ where
     S: SparseTrieTrait + SparseTrieExt + Default + Clone,
 {
     /// Minimum number of storage tries before parallel pruning is enabled.
+    #[cfg(feature = "std")]
     const PARALLEL_PRUNE_THRESHOLD: usize = 16;
 
     /// Returns true if parallelism should be enabled for pruning the given number of tries.