diff --git a/neo.UnitTests/Network/P2P/Payloads/UT_Witness.cs b/neo.UnitTests/Network/P2P/Payloads/UT_Witness.cs
index ac163d3519..9c8d249d62 100644
--- a/neo.UnitTests/Network/P2P/Payloads/UT_Witness.cs
+++ b/neo.UnitTests/Network/P2P/Payloads/UT_Witness.cs
@@ -115,11 +115,15 @@ private Witness PrepareDummyWitness(int maxAccounts)
         [TestMethod]
         public void MaxSize_OK()
         {
-            var witness = PrepareDummyWitness(14);
+            var witness = PrepareDummyWitness(10);
 
             // Check max size
 
-            Assert.IsTrue(witness.Size < 1400);
+            witness.Size.Should().Be(1003);
+            witness.InvocationScript.GetVarSize().Should().Be(653);
+            witness.VerificationScript.GetVarSize().Should().Be(350);
+            
+            Assert.IsTrue(witness.Size <= 1024);
 
             var copy = witness.ToArray().AsSerializable<Witness>();
 
diff --git a/neo/Network/P2P/Payloads/Witness.cs b/neo/Network/P2P/Payloads/Witness.cs
index 32530670a0..52a2186ee8 100644
--- a/neo/Network/P2P/Payloads/Witness.cs
+++ b/neo/Network/P2P/Payloads/Witness.cs
@@ -28,11 +28,11 @@ public virtual UInt160 ScriptHash
 
         void ISerializable.Deserialize(BinaryReader reader)
         {
-            // This is designed to allow a MultiSig 10/10 (around 1000 bytes)
-            // Invocation = 10 * 64 + 10 = 650
-            InvocationScript = reader.ReadVarBytes(650);
-            // Verification = 10 * 33 = 330 ~ 350
-            VerificationScript = reader.ReadVarBytes(350);
+            // This is designed to allow a MultiSig 10/10 (around 1003 bytes) ~1024 bytes
+            // Invocation = 10 * 64 + 10 = 650 ~ 664  (exact is 653)
+            InvocationScript = reader.ReadVarBytes(664);
+            // Verification = 10 * 33 + 10 = 340 ~ 360   (exact is 350)
+            VerificationScript = reader.ReadVarBytes(360);
         }
 
         void ISerializable.Serialize(BinaryWriter writer)