diff --git a/app/code/Magento/Usps/Model/Carrier.php b/app/code/Magento/Usps/Model/Carrier.php
index 1fdc35eab1393..b6755020c46c3 100644
--- a/app/code/Magento/Usps/Model/Carrier.php
+++ b/app/code/Magento/Usps/Model/Carrier.php
@@ -317,7 +317,7 @@ public function setRequest(\Magento\Quote\Model\Quote\Address\RateRequest $reque
 
         $weight = $this->getTotalNumOfBoxes($request->getPackageWeight());
         $r->setWeightPounds(floor($weight));
-        $r->setWeightOunces(round(($weight - floor($weight)) * self::OUNCES_POUND, 1));
+        $r->setWeightOunces(round(($weight - floor($weight)) * self::OUNCES_POUND, 10));
         if ($request->getFreeMethodWeight() != $request->getPackageWeight()) {
             $r->setFreeMethodWeight($request->getFreeMethodWeight());
         }