diff --git a/image_ref/main.py b/image_ref/main.py
index 35fd390c66ccacb2109420a670905ea4e9915591..0d109924a702ab54673efe14e823f09a5b9487cb 100644
--- a/image_ref/main.py
+++ b/image_ref/main.py
@@ -137,8 +137,8 @@ def run_duo(args):
 
     #load and evaluate best model
     load_model(model, args.save_path)
-    make_prediction_duo(model,data_test_batch, 'output/confusion_matrix_contractive_{}.png'.format(args.positive_prop),
-                        'output/confidence_matrix_contractive_{}.png'.format(args.positive_prop))
+    make_prediction_duo(model,data_test_batch, 'output/confusion_matrix_contractive_{}_bis.png'.format(args.positive_prop),
+                        'output/confidence_matrix_contractive_{}_bis.png'.format(args.positive_prop))
 
 
 def make_prediction_duo(model, data, f_name, f_name2):