diff --git a/delfland/ppo-insight/ppo_insight.py b/delfland/ppo-insight/ppo_insight.py
index 9fe3639..aa7fca1 100644
--- a/delfland/ppo-insight/ppo_insight.py
+++ b/delfland/ppo-insight/ppo_insight.py
@@ -42,8 +42,12 @@ def upload_file():
             filename = secure_filename(file.filename)
             filepath = os.path.join(app.config["UPLOAD_FOLDER"], filename)
             file.save(filepath)
-            flash("Bestand geüpload en verwerkt! <a href='" +
-                  url_for('show_result') + "'>Bekijk de resultaten</a>", "success")
+            flash(
+                "Bestand geüpload en verwerkt! <a href='"
+                + url_for("show_result")
+                + "'>Bekijk de resultaten</a>",
+                "success",
+            )
             process_excel(filepath)
             return redirect(url_for("upload_file"))
 
@@ -79,7 +83,7 @@ def download_excel():
     return Response(
         output,
         mimetype="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
-        headers={"Content-Disposition": f"attachment; filename={filename}"}
+        headers={"Content-Disposition": f"attachment; filename={filename}"},
     )
 
 
@@ -87,7 +91,8 @@ def getextrapolation(extrapolateYears):
     conn, cursor = get_db_connection()
 
     # Haal de originele data op zonder extrapolatie
-    cursor.execute("""
+    cursor.execute(
+        """
         SELECT 
             Object_code,
             Object_omschrijving,
@@ -104,7 +109,8 @@ def getextrapolation(extrapolateYears):
             Klasse_object,
             Categorie
         FROM onderhoud
-    """)
+    """
+    )
 
     # Haal de kolomnamen op
     columns = [desc[0] for desc in cursor.description]
@@ -137,7 +143,8 @@ def getextrapolation(extrapolateYears):
 
             if pd.notna(vervaldatum):  # Controleer of het een geldige datum is
                 new_row["Vervaldatum"] = (
-                    vervaldatum + pd.DateOffset(years=i)).strftime("%Y-%m-%d")
+                    vervaldatum + pd.DateOffset(years=i)
+                ).strftime("%Y-%m-%d")
             else:
                 # Indien geen geldige datum, zet als None
                 new_row["Vervaldatum"] = None