diff --git a/subjects/mobile-dev/intro/README.md b/subjects/mobile-dev/intro/README.md
index 1a386fb04..84d360b95 100644
--- a/subjects/mobile-dev/intro/README.md
+++ b/subjects/mobile-dev/intro/README.md
@@ -6,7 +6,7 @@ Dart is the programming language of the [Flutter](https://flutter.dev) framework
 
 ### Instructions
 
-Let's start with the standard tradition for learning a new programming language; you're first `"Hello, world!"` with dart.
+Let's start with the standard tradition for learning a new programming language; your first `"Hello, world!"` with dart.
 
 Create a `main` function which prints `"Hello, world!"`, followed by a new-line character.