diff --git a/sartorius_logger/__init__.py b/sartorius_logger/__init__.py
index ed7f8cf..1d40f10 100644
--- a/sartorius_logger/__init__.py
+++ b/sartorius_logger/__init__.py
@@ -8,6 +8,7 @@ __version__ = "0.0.1"
 import pandas
 import sartoriusb
 import time
+import sys
 
 from collections import namedtuple
 from datetime import datetime
@@ -108,7 +109,9 @@ def gooey_progress_factory(settings):
         for i in iterator:
             print(f"measurement {i} of {total}")
             yield i
+            sys.stdout.flush()
         print(f"measurement {total} of {total}")
+        sys.stdout.flush()
 
     return gui_progress
 
diff --git a/tests/test_sartorius_logger.py b/tests/test_sartorius_logger.py
index efe8fb1..bdeef75 100644
--- a/tests/test_sartorius_logger.py
+++ b/tests/test_sartorius_logger.py
@@ -12,7 +12,7 @@ def settings_fixture():
     interval = ParsedDuration(10, "s", 10)
     directory = Path("/something/made/up")
 
-    yield Settings(duration, interval, directory, "usb")
+    yield Settings(duration, interval, directory, "usb", 31)
 
 
 @pytest.fixture()