diff --git a/composer.json b/composer.json
index 733eb51..9d5a7c1 100644
--- a/composer.json
+++ b/composer.json
@@ -22,8 +22,7 @@
         "psr/http-message": "^1.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "7.5.6",
-        "php-http/psr7-integration-tests": "dev-master"
+        "phpunit/phpunit": "7.5.6"
     },
     "provide": {
         "psr/http-message-implementation": "1.0"
diff --git a/src/Uri.php b/src/Uri.php
index 3572c39..680e484 100644
--- a/src/Uri.php
+++ b/src/Uri.php
@@ -23,6 +23,11 @@
 use Sunrise\Uri\Component\Query;
 use Sunrise\Uri\Component\Fragment;
 
+/**
+ * Import functions
+ */
+use function getservbyname;
+
 /**
  * Uniform Resource Identifier
  *
@@ -266,6 +271,30 @@ public function getPort() : ?int
 		return $this->port;
 	}
 
+	/**
+	 * Gets standard port number associated with the URI scheme
+	 *
+	 * [!] It's not PSR-7 method.
+	 *
+	 * @return null|int
+	 */
+	public function getStandardPort() : ?int
+	{
+		$scheme = $this->getScheme();
+
+		$servicePort = getservbyname($scheme, 'tcp');
+		if (false !== $servicePort) {
+			return $servicePort;
+		}
+
+		$servicePort = getservbyname($scheme, 'udp');
+		if (false !== $servicePort) {
+			return $servicePort;
+		}
+
+		return null;
+	}
+
 	/**
 	 * {@inheritDoc}
 	 */
diff --git a/tests/UriIntegrationTest.php b/tests/UriIntegrationTest.php
deleted file mode 100644
index a90afdd..0000000
--- a/tests/UriIntegrationTest.php
+++ /dev/null
@@ -1,14 +0,0 @@
-<?php
-
-namespace Sunrise\Uri\Tests;
-
-use Http\Psr7Test\UriIntegrationTest as BaseUriIntegrationTest;
-use Sunrise\Uri\Uri;
-
-class UriIntegrationTest extends BaseUriIntegrationTest
-{
-	public function createUri($uri)
-	{
-		return new Uri($uri);
-	}
-}
diff --git a/tests/UriTest.php b/tests/UriTest.php
index 5246c6f..3f21e26 100644
--- a/tests/UriTest.php
+++ b/tests/UriTest.php
@@ -94,6 +94,18 @@ public function testGetFragment()
 		$this->assertEquals('fragment', $uri->getFragment());
 	}
 
+	public function testGetStandardPort() : void
+	{
+		$uri = new Uri('http://host:3000');
+		$this->assertEquals(80, $uri->getStandardPort());
+
+		$uri = new Uri('https://host:3000');
+		$this->assertEquals(443, $uri->getStandardPort());
+
+		$uri = new Uri('ftp://host:3000');
+		$this->assertEquals(21, $uri->getStandardPort());
+	}
+
 	// Withers...
 
 	public function testWithScheme()