diff --git a/nova_vm/src/ecmascript/builtins/structured_data/data_view_objects/data_view_constructor.rs b/nova_vm/src/ecmascript/builtins/structured_data/data_view_objects/data_view_constructor.rs
index ea525569..fe6de430 100644
--- a/nova_vm/src/ecmascript/builtins/structured_data/data_view_objects/data_view_constructor.rs
+++ b/nova_vm/src/ecmascript/builtins/structured_data/data_view_objects/data_view_constructor.rs
@@ -135,9 +135,9 @@ impl DataViewConstructor {
         }
 
         // 14. If byteLength is not undefined, then
-        if !byte_length.is_undefined() {
+        if let Some(view_byte_length) = view_byte_length {
             // a. If offset + viewByteLength > bufferByteLength, throw a RangeError exception.
-            if offset + view_byte_length.unwrap() > buffer_byte_length {
+            if offset + view_byte_length > buffer_byte_length {
                 return Err(agent.throw_exception_with_static_message(
                     ExceptionType::RangeError,
                     "offset is outside the bounds of the buffer",