diff --git a/src/main.cc b/src/main.cc
index 36f3892..495ba3d 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -300,7 +300,7 @@ NAN_METHOD(construct_mm_child_block_blob) { // (shareBuffer, blob_type, childBlo
     blobdata child_block_template_blob = std::string(Buffer::Data(child_block_template_buf), Buffer::Length(child_block_template_buf));
 
     block b = AUTO_VAL_INIT(b);
-    b.set_blob_type(BLOB_TYPE_CRYPTONOTE);
+    b.set_blob_type(blob_type);
     if (!parse_and_validate_block_from_blob(block_template_blob, b)) return THROW_ERROR_EXCEPTION("construct_mm_child_block_blob: Failed to parse parent block");
 
     block b2 = AUTO_VAL_INIT(b2);