diff --git a/neo.UnitTests/Consensus/UT_Consensus.cs b/neo.UnitTests/Consensus/UT_Consensus.cs
index c8d8fbf6c4..c10e6c94e3 100644
--- a/neo.UnitTests/Consensus/UT_Consensus.cs
+++ b/neo.UnitTests/Consensus/UT_Consensus.cs
@@ -20,7 +20,6 @@
 
 namespace Neo.UnitTests.Consensus
 {
-
     [TestClass]
     public class ConsensusTests : TestKit
     {
diff --git a/neo/Consensus/ConsensusService.cs b/neo/Consensus/ConsensusService.cs
index 574082043a..9d0bd5a343 100644
--- a/neo/Consensus/ConsensusService.cs
+++ b/neo/Consensus/ConsensusService.cs
@@ -405,7 +405,7 @@ private void OnPrepareRequestReceived(ConsensusPayload payload, PrepareRequest m
             if (context.RequestSentOrReceived || context.NotAcceptingPayloadsDueToViewChanging) return;
             if (payload.ValidatorIndex != context.Block.ConsensusData.PrimaryIndex || message.ViewNumber != context.ViewNumber) return;
             Log($"{nameof(OnPrepareRequestReceived)}: height={payload.BlockIndex} view={message.ViewNumber} index={payload.ValidatorIndex} tx={message.TransactionHashes.Length}");
-            if (message.Timestamp <= context.PrevHeader.Timestamp || message.Timestamp > TimeProvider.Current.UtcNow.AddMinutes(10).ToTimestampMS())
+            if (message.Timestamp <= context.PrevHeader.Timestamp || message.Timestamp > TimeProvider.Current.UtcNow.AddMilliseconds(8 * Blockchain.MillisecondsPerBlock).ToTimestampMS())
             {
                 Log($"Timestamp incorrect: {message.Timestamp}", LogLevel.Warning);
                 return;