diff --git a/app/Models/Service.php b/app/Models/Service.php
index 6e5f1d1..35400f2 100644
--- a/app/Models/Service.php
+++ b/app/Models/Service.php
@@ -265,7 +265,7 @@ class Service extends Model
 	{
 		$query = $this->hasMany(InvoiceItem::class)
 			->where('item_type','=',0)
-			->orderBy('date_orig');
+			->orderBy('date_start');
 
 		if ($active)
 			$query->where('active','=',TRUE);