diff --git a/docs/guide/start-prerequisites.md b/docs/guide/start-prerequisites.md
index 6956193..63f1936 100644
--- a/docs/guide/start-prerequisites.md
+++ b/docs/guide/start-prerequisites.md
@@ -11,12 +11,12 @@ Yii is a PHP framework so make sure you [read and understand language reference]
 Basic understanding of object oriented programming is required. If you're not familiar with it, check one of the many
 tutorials available such as [the one from tuts+](https://code.tutsplus.com/tutorials/object-oriented-php-for-beginners--net-12762).
 
-Note that the more complicated your application is the more advanced OOP concepts your should learn in order to successfully
+Note that the more complicated your application is the more advanced OOP concepts you should learn in order to successfully
 manage that complexity.
 
 ## Command line and composer
 
 Yii extensively uses de-facto standard PHP package manager, [Composer](https://getcomposer.org/) so make sure you read
-and understand its guide. If you are not familiar with using command line it is time to start trying. Once you'll
+and understand its guide. If you are not familiar with using command line it is time to start trying. Once you
 learn the basics you'll never want to work without it.