diff --git a/tests/constraint_tests.py b/tests/constraint_tests.py
index 53a35936e..55a7e3027 100644
--- a/tests/constraint_tests.py
+++ b/tests/constraint_tests.py
@@ -1860,8 +1860,8 @@ def test_summed_min_max_source(self):
             label="excess",
             inputs={
                 bel: solph.flows.Flow(
-                    summed_min=3,
-                    summed_max=100,
+                    full_load_time_min=3,
+                    full_load_time_max=100,
                     variable_costs=25,
                     max=0.8,
                     nominal_value=10,