diff --git a/src/BeSimple/SoapClient/WsdlDownloader.php b/src/BeSimple/SoapClient/WsdlDownloader.php
index 8ccf889..55c7d90 100644
--- a/src/BeSimple/SoapClient/WsdlDownloader.php
+++ b/src/BeSimple/SoapClient/WsdlDownloader.php
@@ -218,6 +218,10 @@ class WsdlDownloader
                 unset($parts[$key]);
             }
         }
-        return $urlParts['scheme'] . '://' . $urlParts['host'] . implode('/', $parts);
+        $hostname = $urlParts['scheme'] . '://' . $urlParts['host'];
+        if (isset($urlParts['port'])) {
+            $hostname .= ':' . $urlParts['port'];
+        }
+        return $hostname . implode('/', $parts);
     }
 }
\ No newline at end of file
diff --git a/tests/BeSimple/Tests/SoapClient/WsdlDownloaderTest.php b/tests/BeSimple/Tests/SoapClient/WsdlDownloaderTest.php
index fc006ae..09ec14c 100644
--- a/tests/BeSimple/Tests/SoapClient/WsdlDownloaderTest.php
+++ b/tests/BeSimple/Tests/SoapClient/WsdlDownloaderTest.php
@@ -98,21 +98,21 @@ class WsdlDownloaderTest extends \PHPUnit_Framework_TestCase
         $method = $class->getMethod('isRemoteFile');
         $method->setAccessible(true);
 
-        $this->assertEquals(true, $method->invoke($wd, 'http://www.php.net/'));
-        $this->assertEquals(true, $method->invoke($wd, 'http://localhost/'));
-        $this->assertEquals(true, $method->invoke($wd, 'http://mylocaldomain/'));
-        $this->assertEquals(true, $method->invoke($wd, 'http://www.php.net/dir/test.html'));
-        $this->assertEquals(true, $method->invoke($wd, 'http://localhost/dir/test.html'));
-        $this->assertEquals(true, $method->invoke($wd, 'http://mylocaldomain/dir/test.html'));
-        $this->assertEquals(true, $method->invoke($wd, 'https://www.php.net/'));
-        $this->assertEquals(true, $method->invoke($wd, 'https://localhost/'));
-        $this->assertEquals(true, $method->invoke($wd, 'https://mylocaldomain/'));
-        $this->assertEquals(true, $method->invoke($wd, 'https://www.php.net/dir/test.html'));
-        $this->assertEquals(true, $method->invoke($wd, 'https://localhost/dir/test.html'));
-        $this->assertEquals(true, $method->invoke($wd, 'https://mylocaldomain/dir/test.html'));
-        $this->assertEquals(false, $method->invoke($wd, 'c:/dir/test.html'));
-        $this->assertEquals(false, $method->invoke($wd, '/dir/test.html'));
-        $this->assertEquals(false, $method->invoke($wd, '../dir/test.html'));
+        $this->assertTrue($method->invoke($wd, 'http://www.php.net/'));
+        $this->assertTrue($method->invoke($wd, 'http://localhost/'));
+        $this->assertTrue($method->invoke($wd, 'http://mylocaldomain/'));
+        $this->assertTrue($method->invoke($wd, 'http://www.php.net/dir/test.html'));
+        $this->assertTrue($method->invoke($wd, 'http://localhost/dir/test.html'));
+        $this->assertTrue($method->invoke($wd, 'http://mylocaldomain/dir/test.html'));
+        $this->assertTrue($method->invoke($wd, 'https://www.php.net/'));
+        $this->assertTrue($method->invoke($wd, 'https://localhost/'));
+        $this->assertTrue($method->invoke($wd, 'https://mylocaldomain/'));
+        $this->assertTrue($method->invoke($wd, 'https://www.php.net/dir/test.html'));
+        $this->assertTrue($method->invoke($wd, 'https://localhost/dir/test.html'));
+        $this->assertTrue($method->invoke($wd, 'https://mylocaldomain/dir/test.html'));
+        $this->assertFalse($method->invoke($wd, 'c:/dir/test.html'));
+        $this->assertFalse($method->invoke($wd, '/dir/test.html'));
+        $this->assertFalse($method->invoke($wd, '../dir/test.html'));
     }
 
     public function testResolveXsdIncludes()
@@ -182,6 +182,9 @@ class WsdlDownloaderTest extends \PHPUnit_Framework_TestCase
         $method = $class->getMethod('resolveRelativePathInUrl');
         $method->setAccessible(true);
 
+        $this->assertEquals('http://localhost:8080/test', $method->invoke($wd, 'http://localhost:8080/sub', '/test'));
+        $this->assertEquals('http://localhost:8080/test', $method->invoke($wd, 'http://localhost:8080/sub/', '/test'));
+
         $this->assertEquals('http://localhost/test', $method->invoke($wd, 'http://localhost/sub', '/test'));
         $this->assertEquals('http://localhost/test', $method->invoke($wd, 'http://localhost/sub/', '/test'));