diff --git a/phalcon/logger/formatter/json.zep b/phalcon/logger/formatter/json.zep
index 352a25fd6fe..6a1ab5fc285 100644
--- a/phalcon/logger/formatter/json.zep
+++ b/phalcon/logger/formatter/json.zep
@@ -20,6 +20,25 @@ use Phalcon\Logger\Item;
  */
 class Json extends AbstractFormatter
 {
+	/**
+	 * Default date format
+	 *
+	 * @var string
+	 */
+	protected dateFormat = "D, d M y H:i:s O" { get, set };
+
+	/**
+	 * Phalcon\Logger\Formatter\Json construct
+	 *
+	 * @param string dateFormat
+	 */
+	public function __construct(string dateFormat = "") -> void
+	{
+		if dateFormat {
+			let this->dateFormat = dateFormat;
+		}
+	}
+
 	/**
 	 * Applies a format to a message before sent it to the internal log
 	 *
@@ -41,8 +60,8 @@ class Json extends AbstractFormatter
 			[
 				"type"      : item->getName(),
 				"message"   : message,
-				"timestamp" : item->getTime()
+				"timestamp" : date(this->dateFormat, item->getTime())
 			]
-		) . PHP_EOL;
+		);
 	}
 }
diff --git a/phalcon/logger/formatter/line.zep b/phalcon/logger/formatter/line.zep
index bf622b6d1c0..ae64d708006 100644
--- a/phalcon/logger/formatter/line.zep
+++ b/phalcon/logger/formatter/line.zep
@@ -20,7 +20,6 @@ use Phalcon\Logger\Item;
  */
 class Line extends AbstractFormatter
 {
-
 	/**
 	 * Default date format
 	 *
@@ -41,7 +40,7 @@ class Line extends AbstractFormatter
 	 * @param string format
 	 * @param string dateFormat
 	 */
-	public function __construct(format = null, dateFormat = null)
+	public function __construct(string format = "", string dateFormat = "") -> void
 	{
 		if format {
 			let this->format = format;
diff --git a/tests/unit/Logger/Formatter/AbstractFormatter/FormatCest.php b/tests/unit/Logger/Formatter/AbstractFormatter/FormatCest.php
deleted file mode 100644
index 0ca36574f6e..00000000000
--- a/tests/unit/Logger/Formatter/AbstractFormatter/FormatCest.php
+++ /dev/null
@@ -1,37 +0,0 @@
-<?php
-declare(strict_types=1);
-
-/**
- * This file is part of the Phalcon Framework.
- *
- * (c) Phalcon Team <team@phalconphp.com>
- *
- * For the full copyright and license information, please view the LICENSE.txt
- * file that was distributed with this source code.
- */
-
-namespace Phalcon\Test\Unit\Logger\Formatter\AbstractFormatter;
-
-use UnitTester;
-
-/**
- * Class FormatCest
- *
- * @package Phalcon\Test\Unit\Logger
- */
-class FormatCest
-{
-    /**
-     * Tests Phalcon\Logger\Formatter\AbstractFormatter :: format()
-     *
-     * @param UnitTester $I
-     *
-     * @author Phalcon Team <team@phalconphp.com>
-     * @since  2018-11-13
-     */
-    public function loggerFormatterAbstractformatterFormat(UnitTester $I)
-    {
-        $I->wantToTest("Logger\Formatter\AbstractFormatter - format()");
-        $I->skipTest("Need implementation");
-    }
-}
diff --git a/tests/unit/Logger/Formatter/AbstractFormatter/InterpolateCest.php b/tests/unit/Logger/Formatter/AbstractFormatter/InterpolateCest.php
deleted file mode 100644
index c7c0b719b5f..00000000000
--- a/tests/unit/Logger/Formatter/AbstractFormatter/InterpolateCest.php
+++ /dev/null
@@ -1,37 +0,0 @@
-<?php
-declare(strict_types=1);
-
-/**
- * This file is part of the Phalcon Framework.
- *
- * (c) Phalcon Team <team@phalconphp.com>
- *
- * For the full copyright and license information, please view the LICENSE.txt
- * file that was distributed with this source code.
- */
-
-namespace Phalcon\Test\Unit\Logger\Formatter\AbstractFormatter;
-
-use UnitTester;
-
-/**
- * Class InterpolateCest
- *
- * @package Phalcon\Test\Unit\Logger
- */
-class InterpolateCest
-{
-    /**
-     * Tests Phalcon\Logger\Formatter\AbstractFormatter :: interpolate()
-     *
-     * @param UnitTester $I
-     *
-     * @author Phalcon Team <team@phalconphp.com>
-     * @since  2018-11-13
-     */
-    public function loggerFormatterAbstractformatterInterpolate(UnitTester $I)
-    {
-        $I->wantToTest("Logger\Formatter\AbstractFormatter - interpolate()");
-        $I->skipTest("Need implementation");
-    }
-}