diff --git a/framework/filters/Cors.php b/framework/filters/Cors.php
index f4bb94e5d7..68704950cf 100644
--- a/framework/filters/Cors.php
+++ b/framework/filters/Cors.php
@@ -15,7 +15,7 @@ use yii\web\Response;
 /**
  * Cors filter implements [Cross Origin Resource Sharing](http://en.wikipedia.org/wiki/Cross-origin_resource_sharing).
  * Make sure to read carefully what CORS does and does not. CORS do not secure your API,
- * but allow the developper to grant access to third party code (ajax calls from external domain)
+ * but allow the developer to grant access to third party code (ajax calls from external domain)
  *
  * You may use CORS filter by attaching it as a behavior to a controller or module, like the following,
  *
@@ -120,7 +120,7 @@ class Cors extends ActionFilter
     }
 
     /**
-     * Extract CORS headers fron the request
+     * Extract CORS headers from the request
      * @return array CORS headers to handle
      */
     public function extractHeaders()
@@ -177,7 +177,7 @@ class Cors extends ActionFilter
      * Handle classic CORS request to avoid duplicate code
      * @param string $type the kind of headers we would handle
      * @param array $requestHeaders CORS headers request by client
-     * @param array $responseHeaders CORS response headers sent to the clinet
+     * @param array $responseHeaders CORS response headers sent to the client
      */
     protected function prepareAllowHeaders($type, $requestHeaders, &$responseHeaders)
     {
@@ -205,7 +205,7 @@ class Cors extends ActionFilter
     /**
      * Adds the CORS headers to the response
      * @param Response $response
-     * @param array CORS headers which have been compouted
+     * @param array CORS headers which have been computed
      */
     public function addCorsHeaders($response, $headers)
     {