diff --git a/subjects/mobile-dev/intro/README.md b/subjects/mobile-dev/intro/README.md
index d90580aa..62d3b2db 100644
--- a/subjects/mobile-dev/intro/README.md
+++ b/subjects/mobile-dev/intro/README.md
@@ -14,7 +14,7 @@ Create a file named `intro.dart` with the following content and run it!
 
 ```dart
 void main() {
-	print("Hello, World!");
+	print("Hello, world!");
 }
 ```