diff --git a/app/Http/Controllers/InvoiceController.php b/app/Http/Controllers/InvoiceController.php
index 5e5c986..b890689 100644
--- a/app/Http/Controllers/InvoiceController.php
+++ b/app/Http/Controllers/InvoiceController.php
@@ -48,8 +48,9 @@ public function summaryAll()
 
     public function summaryThisYear()
     {
+	$dt = new DateTime('first day of january this year');
         $invoices = Invoice::select()
-            ->where('invoice_date', '>=', (new DateTime('first day of january this year')->format('Y-m-d')))
+            ->where('invoice_date', '>=', $dt->format('Y-m-d'))
             ->orderBy('invoice_date', 'asc')
             ->orderByRaw("CAST(SUBSTRING(nr, 4) AS UNSIGNED) ASC")
             ->get();
@@ -61,8 +62,9 @@ public function summaryThisYear()
 
     public function summaryBeforeThisYear()
     {
+	$dt = new DateTime('first day of january this year');
         $invoices = Invoice::select()
-            ->where('invoice_date', '<', (new DateTime('first day of january this year')->format('Y-m-d')))
+            ->where('invoice_date', '<', $dt->format('Y-m-d'))
             ->orderBy('invoice_date', 'asc')
             ->orderByRaw("CAST(SUBSTRING(nr, 4) AS UNSIGNED) ASC")
             ->get();