diff --git a/scripts/history_stagging.py b/scripts/history_stagging.py
index 49bcd2f..c16c812 100644
--- a/scripts/history_stagging.py
+++ b/scripts/history_stagging.py
@@ -23,9 +23,11 @@ def extract_cat(cat: pd.DataFrame):
 
 
 def lot_naming(value):
-    if str(value).isnumeric():
-        return str(value).zfill(2)
-    return "PC"
+    try:
+        v = int(value)
+    except ValueError:
+        return "PC"
+    return str(v).zfill(2)
 
 
 def trans_2017_2021(
@@ -99,7 +101,7 @@ def trans_2023(
     df = df.assign(
         Débit=df["Débit"].fillna(0),
         Crédit=df["Crédit"].fillna(0),
-        Lot=lot_naming(df["Porte"]),
+        Lot=df["Porte"].apply(lot_naming),
         Année=year,
     )
     return df[stagging_columns]