diff --git a/core/src/main/kotlin/net/corda/core/utilities/ByteArrays.kt b/core/src/main/kotlin/net/corda/core/utilities/ByteArrays.kt
index 2b314a8772..7190e0c770 100644
--- a/core/src/main/kotlin/net/corda/core/utilities/ByteArrays.kt
+++ b/core/src/main/kotlin/net/corda/core/utilities/ByteArrays.kt
@@ -33,7 +33,7 @@ sealed class ByteSequence(private val _bytes: ByteArray, val offset: Int, val si
     fun open() = ByteArrayInputStream(_bytes, offset, size)
 
     /**
-     * Create a sub-sequence of this sequence.  A copy of the underlying array may be made, if a subclass overrides
+     * Create a sub-sequence of this sequence. A copy of the underlying array may be made, if a subclass overrides
      * [bytes] to do so, as [OpaqueBytes] does.
      *
      * @param offset The offset within this sequence to start the new sequence. Note: not the offset within the backing array.
@@ -41,10 +41,7 @@ sealed class ByteSequence(private val _bytes: ByteArray, val offset: Int, val si
      */
     @Suppress("MemberVisibilityCanBePrivate")
     fun subSequence(offset: Int, size: Int): ByteSequence {
-        require(offset >= 0)
-        require(offset + size <= this.size)
-        // Intentionally use bytes rather than _bytes, in case a subclass wants to prevent access to the original
-        // underlying array which could be revealed here (e.g. OpaqueBytes).
+        // Intentionally use bytes rather than _bytes, to mirror the copy-or-not behaviour of that property.
         return if (offset == 0 && size == this.size) this else of(bytes, this.offset + offset, size)
     }