diff --git a/Helper/PaymentMethods.php b/Helper/PaymentMethods.php
index 8337047b0..7a2db891c 100644
--- a/Helper/PaymentMethods.php
+++ b/Helper/PaymentMethods.php
@@ -217,13 +217,13 @@ protected function getCurrentPaymentAmount()
 
         $total = (float)$total;
 
-        if ($total > 0) {
+        if ($total >= 0) {
             return $total;
         }
 
         throw new \Exception(
             sprintf(
-                'Cannot retrieve a valid grand total from quote ID: `%s`. Expected a float > `0`, got `%f`.',
+                'Cannot retrieve a valid grand total from quote ID: `%s`. Expected a float >= `0`, got `%f`.',
                 $this->getQuote()->getEntityId(),
                 $total
             )