diff --git a/0_KPI_functions.py b/0_KPI_functions.py
index 5ba11b9..6d0fcbb 100644
--- a/0_KPI_functions.py
+++ b/0_KPI_functions.py
@@ -46,7 +46,7 @@ def tickets_kpi_function(tickets_information = None):
     
     # Dummy : Canal de vente en ligne
     liste_mots = ['en ligne', 'internet', 'web', 'net', 'vad', 'online'] # vad = vente à distance
-    tickets_information_copy['vente_internet'] = tickets_information_copy['supplier_name'].str.contains('|'.join(liste_mots), case=False).astype(int)
+    tickets_information_copy['vente_internet'] = tickets_information_copy['supplier_name'].fillna('').str.contains('|'.join(liste_mots), case=False).astype(int)
 
     # Proportion de vente en ligne
     prop_vente_internet = tickets_information_copy[tickets_information_copy['vente_internet'] == 1].groupby(['customer_id'])['ticket_id'].count().reset_index()