diff --git a/src/Client/Cookies.php b/src/Client/Cookies.php
index da3c1b62f5..162e0f519f 100644
--- a/src/Client/Cookies.php
+++ b/src/Client/Cookies.php
@@ -137,12 +137,8 @@ public function addCookie($cookie, $ref_uri = null)
      * @param Response $response
      * @param Uri\Uri|string $ref_uri Requested URI
      */
-    public function addCookiesFromResponse($response, $ref_uri)
+    public function addCookiesFromResponse(Response $response, $ref_uri)
     {
-        if (!$response instanceof Response) {
-            throw new Exception\InvalidArgumentException('$response is expected to be a Response object');
-        }
-
         $cookie_hdrs = $response->headers()->get('Set-Cookie');
 
         if (is_array($cookie_hdrs)) {
@@ -182,8 +178,7 @@ public function getMatchingCookies($uri, $matchSessionCookies = true,
     {
         if (is_string($uri)) {
             $uri = Uri\UriFactory::factory($uri, 'http');
-        }
-        if (!$uri instanceof Uri\Uri) {
+        } elseif (!$uri instanceof Uri\Uri) {
             throw new Exception\InvalidArgumentException("Invalid URI string or object passed");
         }
 
@@ -221,9 +216,7 @@ public function getCookie($uri, $cookie_name, $ret_as = self::COOKIE_OBJECT)
     {
         if (is_string($uri)) {
             $uri = Uri\UriFactory::factory($uri, 'http');
-        }
-
-        if (!$uri instanceof Uri\Uri) {
+        } elseif (!$uri instanceof Uri\Uri) {
             throw new Exception\InvalidArgumentException('Invalid URI specified');
         }
 
diff --git a/src/Cookies.php b/src/Cookies.php
index b9927973ca..ea8941561e 100755
--- a/src/Cookies.php
+++ b/src/Cookies.php
@@ -140,12 +140,8 @@ public function addCookie(Cookie $cookie, $ref_uri = null)
      * @param Response $response
      * @param Uri\Uri|string $ref_uri Requested URI
      */
-    public function addCookiesFromResponse($response, $ref_uri)
+    public function addCookiesFromResponse(Response $response, $ref_uri)
     {
-        if (!$response instanceof Response) {
-            throw new Exception\InvalidArgumentException('$response is expected to be a Response object');
-        }
-
         $cookie_hdrs = $response->headers()->get('Set-Cookie');
 
         if (is_array($cookie_hdrs)) {
@@ -185,8 +181,7 @@ public function getMatchingCookies($uri, $matchSessionCookies = true,
     {
         if (is_string($uri)) {
             $uri = Uri\UriFactory::factory($uri, 'http');
-        }
-        if (!$uri instanceof Uri\Uri) {
+        } elseif (!$uri instanceof Uri\Uri) {
             throw new Exception\InvalidArgumentException("Invalid URI string or object passed");
         }
 
@@ -224,9 +219,7 @@ public function getCookie($uri, $cookie_name, $ret_as = self::COOKIE_OBJECT)
     {
         if (is_string($uri)) {
             $uri = Uri\UriFactory::factory($uri, 'http');
-        }
-
-        if (!$uri instanceof Uri\Uri) {
+        } elseif (!$uri instanceof Uri\Uri) {
             throw new Exception\InvalidArgumentException('Invalid URI specified');
         }