diff --git a/kaitai/python/kaitai_sbp/tests/utils.py b/kaitai/python/kaitai_sbp/tests/utils.py
index a5d68e01ea..f8dd436c84 100644
--- a/kaitai/python/kaitai_sbp/tests/utils.py
+++ b/kaitai/python/kaitai_sbp/tests/utils.py
@@ -7,7 +7,7 @@
 import sys
 import sbp.msg as msg_construct
 import sbp.table as table_construct
-from sbp.sbp2json import iter_messages as parse_file_construct
+from sbp.sbp2json import iter_messages_buffered as parse_file_construct
 from subprocess import Popen, PIPE
 
 SBP_HEADER_LEN = 6