diff --git a/0_2_Dataset_construction.py b/0_2_Dataset_construction.py
index 0ceb67a..9d246cd 100644
--- a/0_2_Dataset_construction.py
+++ b/0_2_Dataset_construction.py
@@ -115,7 +115,10 @@ def dataset_construction(min_date, end_features_date, max_date, directory_path):
     max_interval = (end_features_date - min_date) / np.timedelta64(1, 'D') + 1
     df_customer_product[['purchase_date_max', 'purchase_date_min']] = df_customer_product[['purchase_date_max', 'purchase_date_min']].fillna(max_interval)
     df_customer_product[['time_between_purchase']] = df_customer_product[['time_between_purchase']].fillna(-1)
-    
+
+    # Customers who have neither received an e-mail nor made a purchase during the feature estimation period are removed
+    df_customer_product = df_customer_product[(df_customer_product['nb_purchases'] > 0) | (df_customer_product['nb_campaigns'] > 0)]
+
     print("Explanatory variable construction : SUCCESS")
 
     # 2. Construction of the explained variable