diff --git a/tests/lwip/tests/01-run.py b/tests/lwip/tests/01-run.py
index 12a8bd3480..86fa686547 100755
--- a/tests/lwip/tests/01-run.py
+++ b/tests/lwip/tests/01-run.py
@@ -181,6 +181,8 @@ class TestStrategy(ApplicationStrategy):
                 test_case(board_group, self.app_dir, env=None)
                 sys.stdout.write('.')
                 sys.stdout.flush()
+                # wait a bit for tear down of test case
+                time.sleep(.2)
             print()