diff --git a/src/Http/IRequest.php b/src/Http/IRequest.php
index 9c3fb8f7..434682c1 100644
--- a/src/Http/IRequest.php
+++ b/src/Http/IRequest.php
@@ -58,22 +58,19 @@ function getUrl(): UrlScript;
 	/**
 	 * Returns variable provided to the script via URL query ($_GET).
 	 * If no key is passed, returns the entire array.
-	 * @return mixed
 	 */
-	function getQuery(?string $key = null);
+	function getQuery(?string $key = null): mixed;
 
 	/**
 	 * Returns variable provided to the script via POST method ($_POST).
 	 * If no key is passed, returns the entire array.
-	 * @return mixed
 	 */
-	function getPost(?string $key = null);
+	function getPost(?string $key = null): mixed;
 
 	/**
 	 * Returns uploaded file.
-	 * @return FileUpload|array|null
 	 */
-	function getFile(string $key);
+	function getFile(string $key): ?FileUpload;
 
 	/**
 	 * Returns uploaded files.
@@ -82,9 +79,8 @@ function getFiles(): array;
 
 	/**
 	 * Returns variable provided to the script via HTTP cookies.
-	 * @return mixed
 	 */
-	function getCookie(string $key);
+	function getCookie(string $key): mixed;
 
 	/**
 	 * Returns variables provided to the script via HTTP cookies.
diff --git a/src/Http/IResponse.php b/src/Http/IResponse.php
index b71dfe29..f3e64844 100644
--- a/src/Http/IResponse.php
+++ b/src/Http/IResponse.php
@@ -337,9 +337,8 @@ interface IResponse
 
 	/**
 	 * Sets HTTP response code.
-	 * @return static
 	 */
-	function setCode(int $code, ?string $reason = null);
+	function setCode(int $code, ?string $reason = null): static;
 
 	/**
 	 * Returns HTTP response code.
@@ -348,21 +347,18 @@ function getCode(): int;
 
 	/**
 	 * Sends a HTTP header and replaces a previous one.
-	 * @return static
 	 */
-	function setHeader(string $name, string $value);
+	function setHeader(string $name, string $value): static;
 
 	/**
 	 * Adds HTTP header.
-	 * @return static
 	 */
-	function addHeader(string $name, string $value);
+	function addHeader(string $name, string $value): static;
 
 	/**
 	 * Sends a Content-type HTTP header.
-	 * @return static
 	 */
-	function setContentType(string $type, ?string $charset = null);
+	function setContentType(string $type, ?string $charset = null): static;
 
 	/**
 	 * Redirects to a new URL.
@@ -371,9 +367,8 @@ function redirect(string $url, int $code = self::S302_Found): void;
 
 	/**
 	 * Sets the time (like '20 minutes') before a page cached on a browser expires, null means "must-revalidate".
-	 * @return static
 	 */
-	function setExpiration(?string $expire);
+	function setExpiration(?string $expire): static;
 
 	/**
 	 * Checks if headers have been sent.
@@ -392,7 +387,6 @@ function getHeaders(): array;
 
 	/**
 	 * Sends a cookie.
-	 * @return static
 	 */
 	function setCookie(
 		string $name,
@@ -400,12 +394,18 @@ function setCookie(
 		string|int|\DateTimeInterface|null $expire,
 		?string $path = null,
 		?string $domain = null,
-		?bool $secure = null,
-		?bool $httpOnly = null,
-	);
+		bool $secure = false,
+		bool $httpOnly = true,
+		string $sameSite = self::SameSiteLax,
+	): static;
 
 	/**
 	 * Deletes a cookie.
 	 */
-	function deleteCookie(string $name, ?string $path = null, ?string $domain = null, ?bool $secure = null);
+	function deleteCookie(
+		string $name,
+		?string $path = null,
+		?string $domain = null,
+		bool $secure = false,
+	);
 }
diff --git a/src/Http/Response.php b/src/Http/Response.php
index 86de0b4c..65725da5 100644
--- a/src/Http/Response.php
+++ b/src/Http/Response.php
@@ -233,8 +233,8 @@ public function setCookie(
 		?string $path = null,
 		?string $domain = null,
 		?bool $secure = null,
-		?bool $httpOnly = null,
-		?string $sameSite = null,
+		bool $httpOnly = true,
+		string $sameSite = self::SameSiteLax,
 	): static
 	{
 		self::checkHeaders();
@@ -243,8 +243,8 @@ public function setCookie(
 			'path' => $path ?? ($domain ? '/' : $this->cookiePath),
 			'domain' => $domain ?? ($path ? '' : $this->cookieDomain),
 			'secure' => $secure ?? $this->cookieSecure,
-			'httponly' => $httpOnly ?? true,
-			'samesite' => $sameSite ?? self::SameSiteLax,
+			'httponly' => $httpOnly,
+			'samesite' => $sameSite,
 		]);
 		return $this;
 	}