diff --git a/src/Transport/Sendmail.php b/src/Transport/Sendmail.php
index 855dfc1f..214e4271 100644
--- a/src/Transport/Sendmail.php
+++ b/src/Transport/Sendmail.php
@@ -85,9 +85,8 @@ public function setParameters($parameters)
         foreach ($parameters as $param) {
             $string .= ' ' . $param;
         }
-        trim($string);
 
-        $this->parameters = $string;
+        $this->parameters = trim($string);
         return $this;
     }
 
diff --git a/test/Transport/SendmailTest.php b/test/Transport/SendmailTest.php
index c1ad5518..ae205b22 100644
--- a/test/Transport/SendmailTest.php
+++ b/test/Transport/SendmailTest.php
@@ -9,6 +9,7 @@
 
 namespace ZendTest\Mail\Transport;
 
+use ReflectionProperty;
 use Zend\Mail\Message;
 use Zend\Mail\Transport\Exception\RuntimeException;
 use Zend\Mail\Transport\Sendmail;
@@ -158,4 +159,14 @@ public function testValidEmailLocaDomainInFromHeader()
         $this->transport->send($message);
         $this->assertContains('From: Foo Bar <"foo-bar"@domain>', $this->additional_headers);
     }
+
+    public function testTrimmedParameters()
+    {
+        $this->transport->setParameters([' -R', 'hdrs ']);
+
+        $r = new ReflectionProperty($this->transport, 'parameters');
+        $r->setAccessible(true);
+
+        $this->assertSame('-R hdrs', $r->getValue($this->transport));
+    }
 }