diff --git a/statistiques/parseStats.py b/statistiques/parseStats.py
index 49d13ae..3a6e23b 100755
--- a/statistiques/parseStats.py
+++ b/statistiques/parseStats.py
@@ -85,6 +85,8 @@ class Stats:
         res = self.db.dbQuery(f"""SELECT * FROM {dbName} WHERE timestamp > {self.startDate} AND timestamp < {self.endDate} ORDER by id""")
         consolided = {}
         moy_conf_by_day = 0
+        if res is None:
+            sys.exit('Traitement en cours, base de données indisponible')
         for line in res:
             field = line[2]
             if  field in STATS_TOT_FIELDS: