diff --git a/src/Database/Type/DateTimeType.php b/src/Database/Type/DateTimeType.php
index e358a9511ab..49d261a9bee 100644
--- a/src/Database/Type/DateTimeType.php
+++ b/src/Database/Type/DateTimeType.php
@@ -157,7 +157,7 @@ public function marshal($value)
             if ($value === '' || $value === null || $value === false || $value === true) {
                 return null;
             }
-            if (is_numeric($value)) {
+            if (ctype_digit($value)) {
                 $date = new $class('@' . $value);
             } elseif (is_string($value) && $this->_useLocaleParser) {
                 return $this->_parseValue($value);
diff --git a/tests/TestCase/Database/Type/TimeTypeTest.php b/tests/TestCase/Database/Type/TimeTypeTest.php
index 098ff6b2397..fe5976be6d3 100644
--- a/tests/TestCase/Database/Type/TimeTypeTest.php
+++ b/tests/TestCase/Database/Type/TimeTypeTest.php
@@ -15,6 +15,7 @@
 namespace Cake\Test\TestCase\Database\Type;
 
 use Cake\Database\Type\TimeType;
+use Cake\I18n\I18n;
 use Cake\I18n\Time;
 use Cake\TestSuite\TestCase;
 
@@ -26,12 +27,17 @@ class TimeTypeTest extends TestCase
     /**
      * @var \Cake\Database\Type\TimeType
      */
-    public $type;
+    protected $type;
 
     /**
      * @var \Cake\Database\Driver
      */
-    public $driver;
+    protected $driver;
+
+    /**
+     * @var string
+     */
+    protected $locale;
 
     /**
      * Setup
@@ -43,6 +49,18 @@ public function setUp()
         parent::setUp();
         $this->type = new TimeType();
         $this->driver = $this->getMockBuilder('Cake\Database\Driver')->getMock();
+        $this->locale = I18n::locale();
+    }
+
+    /**
+     * Teardown
+     *
+     * @return void
+     */
+    public function tearDown()
+    {
+        parent::tearDown();
+        I18n::locale($this->locale);
     }
 
     /**
@@ -181,7 +199,7 @@ public function testMarshal($value, $expected)
     }
 
     /**
-     * Tests marshalling dates using the locale aware parser
+     * Tests marshalling times using the locale aware parser
      *
      * @return void
      */
@@ -195,6 +213,20 @@ public function testMarshalWithLocaleParsing()
         $this->assertNull($this->type->marshal('derp:23'));
     }
 
+    /**
+     * Tests marshalling times in denmark.
+     *
+     * @return void
+     */
+    public function testMarshalWithLocaleParsingDanishLocale()
+    {
+        I18n::locale('da_DK');
+        $this->type->useLocaleParser();
+        $expected = new Time('03:20:00');
+        $result = $this->type->marshal('03.20');
+        $this->assertEquals($expected->format('H:i'), $result->format('H:i'));
+    }
+
     /**
      * Test that toImmutable changes all the methods to create frozen time instances.
      *