diff --git a/test/test_class1_pan.py b/test/test_class1_pan.py
index 0528ef60da5b6f82d4381452030cbe51c2ce83ef..339cdbce03e6c23a8296b89a6f758c291e0de004 100644
--- a/test/test_class1_pan.py
+++ b/test/test_class1_pan.py
@@ -49,6 +49,7 @@ HYPERPARAMETERS = {
     'random_negative_distribution_smoothing': 0.0,
     'random_negative_match_distribution': True,
     'random_negative_rate': 0.2,
+    'random_negative_method': 'by_allele',
     'train_data': {},
     'validation_split': 0.1,
 }