diff --git a/app/Invoice.php b/app/Invoice.php
index 69608581..581d1e1d 100644
--- a/app/Invoice.php
+++ b/app/Invoice.php
@@ -11,4 +11,8 @@ class Invoice extends Model
     public function booking(){
         return $this->belongsTo('App\Booking');
     }
+
+    public function invoiceDetails() {
+        return $this->hasOne('App\InvoiceDetails');
+    }
 }