diff --git a/app/Http/Requests/Preview/PreviewInvoiceRequest.php b/app/Http/Requests/Preview/PreviewInvoiceRequest.php
index b2da03628210..bfa4db546470 100644
--- a/app/Http/Requests/Preview/PreviewInvoiceRequest.php
+++ b/app/Http/Requests/Preview/PreviewInvoiceRequest.php
@@ -48,7 +48,7 @@ class PreviewInvoiceRequest extends Request
         $input['line_items'] = isset($input['line_items']) ? $this->cleanItems($input['line_items']) : [];
         $input['amount'] = 0;
         $input['balance'] = 0;
-        $input['number'] = ctrans('texts.live_preview').' #'.rand(0, 1000);
+        $input['number'] = isset($input['number']) ? $input['number'] : ctrans('texts.live_preview').' #'.rand(0, 1000);
 
         $this->replace($input);
     }
diff --git a/app/Http/Requests/Preview/PreviewPurchaseOrderRequest.php b/app/Http/Requests/Preview/PreviewPurchaseOrderRequest.php
index d91de03c19ec..46e45f12591d 100644
--- a/app/Http/Requests/Preview/PreviewPurchaseOrderRequest.php
+++ b/app/Http/Requests/Preview/PreviewPurchaseOrderRequest.php
@@ -48,7 +48,7 @@ class PreviewPurchaseOrderRequest extends Request
         $input['line_items'] = isset($input['line_items']) ? $this->cleanItems($input['line_items']) : [];
         $input['amount'] = 0;
         $input['balance'] = 0;
-        $input['number'] = ctrans('texts.live_preview') . " #". rand(0, 1000);
+        $input['number'] = isset($input['number']) ? $input['number'] : ctrans('texts.live_preview').' #'.rand(0, 1000);
         
         $this->replace($input);
     }