diff --git a/CHANGELOG_PENDING.md b/CHANGELOG_PENDING.md
index d75e29ce7..c8bb7bcca 100644
--- a/CHANGELOG_PENDING.md
+++ b/CHANGELOG_PENDING.md
@@ -24,3 +24,4 @@ program](https://hackerone.com/tendermint).
 ### BUG FIXES:
 
 - [consensus] \#3908 Wait `timeout_commit` to pass even if `create_empty_blocks` is `false`
+- [mempool] \#3968 Fix memory loading error on 32-bit machines (@jon-certik)
diff --git a/mempool/clist_mempool.go b/mempool/clist_mempool.go
index 8df4e6708..ee47e52d8 100644
--- a/mempool/clist_mempool.go
+++ b/mempool/clist_mempool.go
@@ -53,8 +53,8 @@ type CListMempool struct {
 
 	// Atomic integers
 	height     int64 // the last block Update()'d to
-	rechecking int32 // for re-checking filtered txs on Update()
 	txsBytes   int64 // total size of mempool, in bytes
+	rechecking int32 // for re-checking filtered txs on Update()
 
 	// Keep a cache of already-seen txs.
 	// This reduces the pressure on the proxyApp.