diff --git a/tests/optimize/test_optimize_reports.py b/tests/optimize/test_optimize_reports.py
index 5459f76f5..d0c970b33 100644
--- a/tests/optimize/test_optimize_reports.py
+++ b/tests/optimize/test_optimize_reports.py
@@ -587,7 +587,7 @@ def test_generate_periodic_breakdown_stats(testdatadir):
     day = res[0]
     assert "date" in day
     assert "draws" in day
-    assert "loses" in day
+    assert "losses" in day
     assert "wins" in day
     assert "profit_abs" in day