diff --git a/test/test_chat_text.py b/test/test_chat_text.py
index feecb5e7..75e0e888 100644
--- a/test/test_chat_text.py
+++ b/test/test_chat_text.py
@@ -145,7 +145,7 @@ def test_chat_text(
                 STATIONS[0],
                 STATIONS[1],
                 messages[message_no],
-                True,  # low bandwidth mode
+                freedv_mode == "datac3",  # low bandwidth mode
                 tmp_path,
             ),
             daemon=True,
@@ -159,7 +159,7 @@ def test_chat_text(
                 STATIONS[1],
                 STATIONS[0],
                 messages[message_no],
-                True,  # low bandwidth mode
+                freedv_mode == "datac3",  # low bandwidth mode
                 tmp_path,
             ),
             daemon=True,