diff --git a/tests/test_phenoscore.py b/tests/test_phenoscore.py
index 297ab6d..eb86888 100644
--- a/tests/test_phenoscore.py
+++ b/tests/test_phenoscore.py
@@ -47,7 +47,6 @@ def test_runPhenoScore():
         adata=adat,
         cond_ref='A',
         cond_test='B',
-        transformation='log2',
         test='ttest',
         score_level='compare_reps',
         growth_rate=1,