diff --git a/app/code/Magento/Webapi/Controller/Rest/Request.php b/app/code/Magento/Webapi/Controller/Rest/Request.php
index bb7c316fd35ad..ca4e3164635c6 100644
--- a/app/code/Magento/Webapi/Controller/Rest/Request.php
+++ b/app/code/Magento/Webapi/Controller/Rest/Request.php
@@ -18,6 +18,8 @@ class Request extends \Magento\Webapi\Controller\Request
      */
     const REQUEST_CHARSET = 'utf-8';
 
+    const DEFAULT_ACCEPT = '*/*';
+
     /** @var string */
     protected $_serviceName;
 
@@ -101,7 +103,7 @@ public function getAcceptTypes()
         foreach ($qualityToTypes as $typeList) {
             $orderedTypes += $typeList;
         }
-        return array_keys($orderedTypes);
+        return empty($orderedTypes) ? self::DEFAULT_ACCEPT : array_keys($orderedTypes);
     }
 
     /**
diff --git a/dev/tests/api-functional/_files/Magento/TestModule1/etc/webapi.xml b/dev/tests/api-functional/_files/Magento/TestModule1/etc/webapi.xml
index 730cf6b892aaf..c73e035fdac15 100644
--- a/dev/tests/api-functional/_files/Magento/TestModule1/etc/webapi.xml
+++ b/dev/tests/api-functional/_files/Magento/TestModule1/etc/webapi.xml
@@ -52,6 +52,12 @@
             <resource ref="Magento_TestModule1::resource2" />
         </resources>
     </route>
+    <route method="GET" url="/V1/testmodule1/resource1/:itemId">
+        <service class="Magento\TestModule1\Service\V1\AllSoapAndRestInterface" method="item" />
+        <resources>
+            <resource ref="anonymous" />
+        </resources>
+    </route>
     <route method="POST" url="/V1/testmodule1/itemAnyType">
         <service class="Magento\TestModule1\Service\V1\AllSoapAndRestInterface" method="itemAnyType" />
         <resources>
diff --git a/dev/tests/api-functional/testsuite/Magento/Webapi/Routing/CoreRoutingTest.php b/dev/tests/api-functional/testsuite/Magento/Webapi/Routing/CoreRoutingTest.php
index 978ceab1c9689..7a05ee6be2567 100644
--- a/dev/tests/api-functional/testsuite/Magento/Webapi/Routing/CoreRoutingTest.php
+++ b/dev/tests/api-functional/testsuite/Magento/Webapi/Routing/CoreRoutingTest.php
@@ -9,6 +9,10 @@
  */
 namespace Magento\Webapi\Routing;
 
+
+use Magento\TestFramework\Helper\Bootstrap;
+use Magento\TestFramework\TestCase\Webapi\Adapter\Rest\CurlClient;
+
 class CoreRoutingTest extends \Magento\Webapi\Routing\BaseService
 {
     public function testBasicRoutingExplicitPath()
@@ -73,4 +77,15 @@ public function testExceptionSoapInternalError()
         $this->setExpectedException('SoapFault', 'Generic service exception');
         $this->_webApiCall($serviceInfo);
     }
+
+    public function testRestNoAcceptHeader()
+    {
+        $this->_markTestAsRestOnly();
+        /** @var $curlClient CurlClient */
+        $curlClient = Bootstrap::getObjectManager()->get(
+            'Magento\TestFramework\TestCase\Webapi\Adapter\Rest\CurlClient'
+        );
+        $response = $curlClient->get('/V1/testmodule1/resource1/1', [], ['Accept:']);
+        $this->assertEquals('testProduct1', $response['name'], "Empty Accept header failed to return response.");
+    }
 }