diff --git a/app/Http/Controllers/HomeController.php b/app/Http/Controllers/HomeController.php
index e037e79e..b73cc35f 100644
--- a/app/Http/Controllers/HomeController.php
+++ b/app/Http/Controllers/HomeController.php
@@ -26,7 +26,7 @@ class HomeController extends Controller
         $product_costs = 0;
 
         foreach (Sale::completed()->with('saleDetails')->get() as $sale) {
-            foreach ($sale->saleDetails as $saleDetail) {
+            foreach ($sale->saleDetails??[] as $saleDetail) {
                 $product_costs += $saleDetail->product->product_cost;
             }
         }