diff --git a/src/Helper/FlashMessenger.php b/src/Helper/FlashMessenger.php
index 7e71fcca..d15b6adc 100644
--- a/src/Helper/FlashMessenger.php
+++ b/src/Helper/FlashMessenger.php
@@ -31,6 +31,7 @@ class FlashMessenger extends AbstractTranslatorHelper implements ServiceLocatorA
         PluginFlashMessenger::NAMESPACE_ERROR => 'error',
         PluginFlashMessenger::NAMESPACE_SUCCESS => 'success',
         PluginFlashMessenger::NAMESPACE_DEFAULT => 'default',
+        PluginFlashMessenger::NAMESPACE_WARNING => 'warning',
     );
 
     /**
diff --git a/test/Helper/FlashMessengerTest.php b/test/Helper/FlashMessengerTest.php
index e742e3c8..3c2cf998 100644
--- a/test/Helper/FlashMessengerTest.php
+++ b/test/Helper/FlashMessengerTest.php
@@ -46,6 +46,7 @@ public function seedMessages()
         $helper->addMessage('bar');
         $helper->addInfoMessage('bar-info');
         $helper->addSuccessMessage('bar-success');
+        $helper->addWarningMessage('bar-warning');
         $helper->addErrorMessage('bar-error');
         unset($helper);
     }
@@ -73,6 +74,7 @@ public function testCanRetrieveMessages()
         $this->assertFalse($helper()->hasMessages());
         $this->assertFalse($helper()->hasInfoMessages());
         $this->assertFalse($helper()->hasSuccessMessages());
+        $this->assertFalse($helper()->hasWarningMessages());
         $this->assertFalse($helper()->hasErrorMessages());
 
         $this->seedMessages();
@@ -80,11 +82,13 @@ public function testCanRetrieveMessages()
         $this->assertTrue(count($helper('default')) > 0);
         $this->assertTrue(count($helper('info')) > 0);
         $this->assertTrue(count($helper('success')) > 0);
+        $this->assertTrue(count($helper('warning')) > 0);
         $this->assertTrue(count($helper('error')) > 0);
 
         $this->assertTrue($this->plugin->hasMessages());
         $this->assertTrue($this->plugin->hasInfoMessages());
         $this->assertTrue($this->plugin->hasSuccessMessages());
+        $this->assertTrue($this->plugin->hasWarningMessages());
         $this->assertTrue($this->plugin->hasErrorMessages());
     }
 
@@ -93,6 +97,7 @@ public function testCanProxyAndRetrieveMessagesFromPluginController()
         $this->assertFalse($this->helper->hasMessages());
         $this->assertFalse($this->helper->hasInfoMessages());
         $this->assertFalse($this->helper->hasSuccessMessages());
+        $this->assertFalse($this->helper->hasWarningMessages());
         $this->assertFalse($this->helper->hasErrorMessages());
 
         $this->seedMessages();
@@ -100,6 +105,7 @@ public function testCanProxyAndRetrieveMessagesFromPluginController()
         $this->assertTrue($this->helper->hasMessages());
         $this->assertTrue($this->helper->hasInfoMessages());
         $this->assertTrue($this->helper->hasSuccessMessages());
+        $this->assertTrue($this->helper->hasWarningMessages());
         $this->assertTrue($this->helper->hasErrorMessages());
     }