diff --git a/src/Neo.VM/ExecutionEngineLimits.cs b/src/Neo.VM/ExecutionEngineLimits.cs
index 553d7ee8..f31b40e5 100644
--- a/src/Neo.VM/ExecutionEngineLimits.cs
+++ b/src/Neo.VM/ExecutionEngineLimits.cs
@@ -36,7 +36,7 @@ public sealed record ExecutionEngineLimits
         /// <summary>
         /// The maximum size of an item in the VM.
         /// </summary>
-        public uint MaxItemSize { get; init; } = 1024 * 1024;
+        public uint MaxItemSize { get; init; } = ushort.MaxValue * 2;
 
         /// <summary>
         /// The largest comparable size. If a <see cref="Types.ByteString"/> or <see cref="Types.Struct"/> exceeds this size, comparison operations on it cannot be performed in the VM.