diff --git a/src/Home.md b/src/Home.md
index 36a9be4..42ce40e 100644
--- a/src/Home.md
+++ b/src/Home.md
@@ -33,7 +33,7 @@ maps to:
 use fltk::{prelude::*, window};
 
 fn main() {
-    let wind = window::Window::new(100, 100, 400, 300, "My Window");
+    let mut wind = window::Window::new(100, 100, 400, 300, "My Window");
     wind.end();
     wind.show();
 }
@@ -70,7 +70,7 @@ To make our first Rust code sample work, we need to import the necessary fltk mo
 use fltk::{prelude::*, window::Window};
 
 fn main() {
-    let wind = Window::new(100, 100, 400, 300, "My Window");
+    let mut wind = Window::new(100, 100, 400, 300, "My Window");
     wind.end();
     wind.show();
 }
@@ -82,7 +82,7 @@ use fltk::{app, prelude::*, window::Window};
 
 fn main() {
     let a = app::App::default();
-    let wind = Window::new(100, 100, 400, 300, "My Window");
+    let mut wind = Window::new(100, 100, 400, 300, "My Window");
     wind.end();
     wind.show();
     a.run().unwrap();
@@ -95,4 +95,4 @@ The book is generated using [mdbook](https://github.com/rust-lang/mdBook) on the
 
 As such, you would need to `cargo install mdbook`. More instructions can be found in fltk-book's README and in mdbook's [user guide](https://rust-lang.github.io/mdBook/).
 
-You can also contribute to the Chinese translation [here](https://github.com/Flatigers/fltk-book-zh)
\ No newline at end of file
+You can also contribute to the Chinese translation [here](https://github.com/Flatigers/fltk-book-zh)