diff --git a/pdf_oralia/join.py b/pdf_oralia/join.py
new file mode 100644
index 0000000..5cf2688
--- /dev/null
+++ b/pdf_oralia/join.py
@@ -0,0 +1,22 @@
+import glob
+
+import pandas as pd
+
+
+def join_excel(src, dest, file_pattern):
+    """Join every excel file in arc respecting file_pattern into on unique file in dist"""
+    filenames = list_files(src, file_pattern)
+    dfs = extract_dfs(filenames)
+    joined_df = pd.concat(dfs)
+    joined_df.to_excel(dest)
+
+
+def list_files(src, file_glob):
+    return list(glob.iglob(f"{src}/{file_glob}"))
+
+
+def extract_dfs(filenames):
+    dfs = []
+    for filename in filenames:
+        dfs.append(pd.read_excel(filename))
+    return dfs
diff --git a/pdf_oralia/scripts.py b/pdf_oralia/scripts.py
index cd486bd..d9e29c1 100644
--- a/pdf_oralia/scripts.py
+++ b/pdf_oralia/scripts.py
@@ -5,6 +5,7 @@ from pathlib import Path
 import click
 
 from .extract import extract_save
+from .join import join_excel
 
 logging_config = dict(
     version=1,
@@ -65,4 +66,7 @@ def all(src, dest):
 @click.option("--src", help="Tous les fichiers dans src", default="./")
 @click.option("--dest", help="Où mettre les fichiers produits", default="")
 def join(src, dest):
-    join_excel(src, dest, df_names=["charge", "locataire"])
+    dest_charge = f"{dest}/charge.xlsx"
+    join_excel(src, dest_charge, "*_charge.xlsx")
+    dest_locataire = f"{dest}/locataire.xlsx"
+    join_excel(src, dest_locataire, "*_locataire.xlsx")