diff --git a/tests/eko/runner/test_parts.py b/tests/eko/runner/test_parts.py
index 2ec217dd7..1c7dd105b 100644
--- a/tests/eko/runner/test_parts.py
+++ b/tests/eko/runner/test_parts.py
@@ -5,18 +5,18 @@ def test_evolve_configs(eko_factory):
     # QCD@LO
     e10 = eko_factory.get()
     assert e10.theory_card.order == (1, 0)
-    p10 = parts.evolve_configs(e10)
+    p10 = parts._evolve_configs(e10)
     assert p10["matching_order"] == (0, 0)
     # QCD@N3LO + QED@N2LO w/o matching_order
     eko_factory.theory.order = (4, 3)
     eko_factory.theory.matching_order = None
     e43 = eko_factory.get({})
     assert e43.theory_card.order == (4, 3)
-    p43 = parts.evolve_configs(e43)
+    p43 = parts._evolve_configs(e43)
     assert p43["matching_order"] == (3, 0)
     # QCD@N3LO + QED@N2LO w/ matching_order
     eko_factory.theory.matching_order = (3, 0)
     e43b = eko_factory.get({})
     assert e43b.theory_card.order == (4, 3)
-    p43b = parts.evolve_configs(e43b)
+    p43b = parts._evolve_configs(e43b)
     assert p43b["matching_order"] == (3, 0)