diff --git a/src/neo/SmartContract/Native/Tokens/NeoToken.cs b/src/neo/SmartContract/Native/Tokens/NeoToken.cs
index c2368a0911..189e493fc8 100644
--- a/src/neo/SmartContract/Native/Tokens/NeoToken.cs
+++ b/src/neo/SmartContract/Native/Tokens/NeoToken.cs
@@ -113,7 +113,8 @@ protected override void OnPersist(ApplicationEngine engine)
             // Set next committee
             if (ShouldRefreshCommittee(engine.Snapshot.Height))
             {
-                engine.Snapshot.Storages[CreateStorageKey(Prefix_Committee)].Value = ComputeCommitteeMembers(engine.Snapshot).ToArray().ToByteArray();
+                StorageItem storageItem = engine.Snapshot.Storages.GetAndChange(CreateStorageKey(Prefix_Committee));
+                storageItem.Value = ComputeCommitteeMembers(engine.Snapshot).ToArray().ToByteArray();
             }
         }