diff --git a/src/Neo.IO/ByteArrayComparer.cs b/src/Neo.IO/ByteArrayComparer.cs
index 47d171758a..c6815419c1 100644
--- a/src/Neo.IO/ByteArrayComparer.cs
+++ b/src/Neo.IO/ByteArrayComparer.cs
@@ -29,7 +29,6 @@ private ByteArrayComparer(int direction)
 
         public int Compare(byte[]? x, byte[]? y)
         {
-            if (ReferenceEquals(x, y)) return 0;
             if (x is null && y is not null)
                 return _direction > 0 ? -y.Length : y.Length;
             if (y is null && x is not null)