diff --git a/app/Utils/HtmlEngine.php b/app/Utils/HtmlEngine.php
index f39912640a79..0fe5bf86c501 100644
--- a/app/Utils/HtmlEngine.php
+++ b/app/Utils/HtmlEngine.php
@@ -214,6 +214,10 @@ class HtmlEngine
         $data['$quote.valid_until'] = ['value' => $this->translateDate($this->entity->due_date, $this->client->date_format(), $this->entity->client->locale()), 'label' => ctrans('texts.valid_until')];
         $data['$credit_amount'] = ['value' => Number::formatMoney($this->entity_calc->getTotal(), $this->client) ?: ' ', 'label' => ctrans('texts.credit_amount')];
         $data['$credit_balance'] = ['value' => Number::formatMoney($this->entity->balance, $this->client) ?: ' ', 'label' => ctrans('texts.credit_balance')];
+        $data['$quote.custom1'] = ['value' => $this->helpers->formatCustomFieldValue($this->company->custom_fields, 'invoice1', $this->entity->custom_value1, $this->client) ?: ' ', 'label' => $this->helpers->makeCustomField($this->company->custom_fields, 'invoice1')];
+        $data['$quote.custom2'] = ['value' => $this->helpers->formatCustomFieldValue($this->company->custom_fields, 'invoice2', $this->entity->custom_value2, $this->client) ?: ' ', 'label' => $this->helpers->makeCustomField($this->company->custom_fields, 'invoice2')];
+        $data['$quote.custom3'] = ['value' => $this->helpers->formatCustomFieldValue($this->company->custom_fields, 'invoice3', $this->entity->custom_value3, $this->client) ?: ' ', 'label' => $this->helpers->makeCustomField($this->company->custom_fields, 'invoice3')];
+        $data['$quote.custom4'] = ['value' => $this->helpers->formatCustomFieldValue($this->company->custom_fields, 'invoice4', $this->entity->custom_value4, $this->client) ?: ' ', 'label' => $this->helpers->makeCustomField($this->company->custom_fields, 'invoice4')];
 
         $data['$credit_number'] = &$data['$number'];
         $data['$credit_no'] = &$data['$number'];