diff --git a/testing/test_pdb.py b/testing/test_pdb.py
index dab8b28c4..59aa183ad 100644
--- a/testing/test_pdb.py
+++ b/testing/test_pdb.py
@@ -697,6 +697,7 @@ class TestDebuggingBreakpoints(object):
         assert "reading from stdin while output" not in rest
         TestPDB.flush(child)
 
+
 class TestTraceOption:
     def test_trace_sets_breakpoint(self, testdir):
         p1 = testdir.makepyfile(