diff --git a/Cookie.php b/Cookie.php
index 30d1e00ab..2ac902685 100644
--- a/Cookie.php
+++ b/Cookie.php
@@ -112,7 +112,7 @@ public function __construct($name, $value = null, $expire = 0, $path = '/', $dom
         } elseif (!is_numeric($expire)) {
             $expire = strtotime($expire);
 
-            if (false === $expire || -1 === $expire) {
+            if (false === $expire) {
                 throw new \InvalidArgumentException('The cookie expiration time is not valid.');
             }
         }
@@ -120,7 +120,7 @@ public function __construct($name, $value = null, $expire = 0, $path = '/', $dom
         $this->name = $name;
         $this->value = $value;
         $this->domain = $domain;
-        $this->expire = $expire;
+        $this->expire = 0 < $expire ? (int) $expire : 0;
         $this->path = empty($path) ? '/' : $path;
         $this->secure = (bool) $secure;
         $this->httpOnly = (bool) $httpOnly;
@@ -147,7 +147,7 @@ public function __toString()
         } else {
             $str .= $this->isRaw() ? $this->getValue() : urlencode($this->getValue());
 
-            if ($this->getExpiresTime() !== 0) {
+            if (0 !== $this->getExpiresTime()) {
                 $str .= '; expires='.gmdate('D, d-M-Y H:i:s T', $this->getExpiresTime()).'; max-age='.$this->getMaxAge();
             }
         }
diff --git a/Tests/CookieTest.php b/Tests/CookieTest.php
index f7dd3f37d..6efd9c5f3 100644
--- a/Tests/CookieTest.php
+++ b/Tests/CookieTest.php
@@ -52,7 +52,14 @@ public function testInstantiationThrowsExceptionIfCookieNameContainsInvalidChara
      */
     public function testInvalidExpiration()
     {
-        $cookie = new Cookie('MyCookie', 'foo', 'bar');
+        new Cookie('MyCookie', 'foo', 'bar');
+    }
+
+    public function testNegativeExpirationIsNotPossible()
+    {
+        $cookie = new Cookie('foo', 'bar', -100);
+
+        $this->assertSame(0, $cookie->getExpiresTime());
     }
 
     public function testGetValue()
@@ -81,6 +88,13 @@ public function testGetExpiresTime()
         $this->assertEquals($expire, $cookie->getExpiresTime(), '->getExpiresTime() returns the expire date');
     }
 
+    public function testGetExpiresTimeIsCastToInt()
+    {
+        $cookie = new Cookie('foo', 'bar', 3600.9);
+
+        $this->assertSame(3600, $cookie->getExpiresTime(), '->getExpiresTime() returns the expire date as an integer');
+    }
+
     public function testConstructorWithDateTime()
     {
         $expire = new \DateTime();