diff --git a/app/rollerverbrauch/__init__.py b/app/rollerverbrauch/__init__.py
index 6811f1c..e2ddb9f 100644
--- a/app/rollerverbrauch/__init__.py
+++ b/app/rollerverbrauch/__init__.py
@@ -92,6 +92,11 @@ def edit_vehicle(vid):
 @login_required
 def delete_vehicle(vid):
     vehicle = Vehicle.query.filter(Vehicle.id == vid).first()
+
+    # prevent deletion of foreign vehicles
+    if not vehicle in current_user.vehicles:
+        return redirect(url_for('get_account_page'))
+
     form = DeleteVehicleForm()
 
     if form.validate_on_submit():
@@ -216,4 +221,4 @@ def prepare_pit_stops(pss):
         curr_date = curr['date']
         curr['days'] = (curr_date - last_date).days
     pitstops.reverse()
-    return pitstops
\ No newline at end of file
+    return pitstops