diff --git a/src/Core/ObjectRegistry.php b/src/Core/ObjectRegistry.php
index e09b3ad32d2..5964f1aa836 100644
--- a/src/Core/ObjectRegistry.php
+++ b/src/Core/ObjectRegistry.php
@@ -122,11 +122,11 @@ protected function _checkDuplicate($name, $config) {
 
 		$fail = false;
 		foreach ($config as $key => $value) {
-			if (isset($existingConfig[$key]) && $existingConfig[$key] !== $value) {
+			if (!array_key_exists($key, $existingConfig)) {
 				$fail = true;
 				break;
 			}
-			if (!array_key_exists($key, $existingConfig)) {
+			if (isset($existingConfig[$key]) && $existingConfig[$key] !== $value) {
 				$fail = true;
 				break;
 			}
diff --git a/tests/TestCase/View/HelperRegistryTest.php b/tests/TestCase/View/HelperRegistryTest.php
index dc830142986..8e03fef5bd6 100644
--- a/tests/TestCase/View/HelperRegistryTest.php
+++ b/tests/TestCase/View/HelperRegistryTest.php
@@ -251,10 +251,23 @@ public function testLoadMultipleTimesAlreadyConfigured() {
 		$this->addToAssertionCount(1);
 	}
 
+/**
+ * Loading a helper overriding defaults to default value
+ * should "just work"
+ *
+ * @return void
+ */
+	public function testLoadMultipleTimesDefaultConfigValuesWorks() {
+		$this->Helpers->load('Number', ['engine' => 'Cake\I18n\Number']);
+		$this->Helpers->load('Number');
+		$this->addToAssertionCount(1);
+	}
+
 /**
  * Loading a helper with different config, should throw an exception
  *
  * @expectedException RuntimeException
+ * @expectedExceptionMessage The "Html" alias has already been loaded with the following
  * @return void
  */
 	public function testLoadMultipleTimesDifferentConfigured() {
@@ -266,6 +279,7 @@ public function testLoadMultipleTimesDifferentConfigured() {
  * Loading a helper with different config, should throw an exception
  *
  * @expectedException RuntimeException
+ * @expectedExceptionMessage The "Html" alias has already been loaded with the following
  * @return void
  */
 	public function testLoadMultipleTimesDifferentConfigValues() {