diff --git a/runtime/src/accounts_db.rs b/runtime/src/accounts_db.rs
index 55084f347d..2aee0280db 100644
--- a/runtime/src/accounts_db.rs
+++ b/runtime/src/accounts_db.rs
@@ -1895,8 +1895,11 @@ impl AccountsDb {
 
         // If the slot is dead, remove the need to shrink the storages as
         // the storage entries will be purged.
-        for slot in dead_slots {
-            self.shrink_candidate_slots.lock().unwrap().remove(slot);
+        {
+            let mut list = self.shrink_candidate_slots.lock().unwrap();
+            for slot in dead_slots {
+                list.remove(slot);
+            }
         }
 
         debug!(