diff --git a/AbstractBrowser.php b/AbstractBrowser.php
index 16420c7..d2a1fae 100644
--- a/AbstractBrowser.php
+++ b/AbstractBrowser.php
@@ -353,11 +353,11 @@ public function request(string $method, string $uri, array $parameters = [], arr
 
         $server = array_merge($this->server, $server);
 
-        if (!empty($server['HTTP_HOST']) && null === parse_url($originalUri, \PHP_URL_HOST)) {
+        if (!empty($server['HTTP_HOST']) && !parse_url($originalUri, \PHP_URL_HOST)) {
             $uri = preg_replace('{^(https?\://)'.preg_quote($this->extractHost($uri)).'}', '${1}'.$server['HTTP_HOST'], $uri);
         }
 
-        if (isset($server['HTTPS']) && null === parse_url($originalUri, \PHP_URL_SCHEME)) {
+        if (isset($server['HTTPS']) && !parse_url($originalUri, \PHP_URL_SCHEME)) {
             $uri = preg_replace('{^'.parse_url($uri, \PHP_URL_SCHEME).'}', $server['HTTPS'] ? 'https' : 'http', $uri);
         }
 
diff --git a/Cookie.php b/Cookie.php
index 1719963..08aeeac 100644
--- a/Cookie.php
+++ b/Cookie.php
@@ -147,7 +147,7 @@ public static function fromString(string $cookie, ?string $url = null): static
         ];
 
         if (null !== $url) {
-            if ((false === $urlParts = parse_url($url)) || !isset($urlParts['host'])) {
+            if (false === ($urlParts = parse_url($url)) || !isset($urlParts['host'])) {
                 throw new InvalidArgumentException(sprintf('The URL "%s" is not valid.', $url));
             }
 
@@ -160,7 +160,7 @@ public static function fromString(string $cookie, ?string $url = null): static
 
             if ('secure' === strtolower($part)) {
                 // Ignore the secure flag if the original URI is not given or is not HTTPS
-                if (!$url || !isset($urlParts['scheme']) || 'https' !== $urlParts['scheme']) {
+                if (null === $url || !isset($urlParts['scheme']) || 'https' !== $urlParts['scheme']) {
                     continue;
                 }