diff --git a/src/main.rs b/src/main.rs
index e3ed136..2dbc59a 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,5 +1,4 @@
 use eframe::egui;
-use std::io::Write as _;
 
 use billy_sheet::gui::SheetGui;
 
@@ -41,20 +40,9 @@ impl eframe::App for Gui {
                         _frame.close();
                     }
                     if ui.button("Save in json").clicked() {
-                        let result = serde_json::to_string_pretty(&self.sheet);
-                        match result {
-                            Ok(sheet_str) => {
-                                let path = std::path::Path::new("./sheet.json");
-                                match std::fs::File::create(path) {
-                                    Ok(mut file) => {
-                                        if let Err(err) = write!(file, "{}", sheet_str) {
-                                            println!("{err}");
-                                        }
-                                    }
-                                    Err(error) => println!("{error}"),
-                                }
-                            }
-                            Err(error) => println!("{error}"),
+                        let path = std::path::Path::new("./sheet.json");
+                        if let Err(error) = billy_sheet::sheet::write_sheet(path, &self.sheet) {
+                            println!("{error}");
                         }
                     }
                 });
diff --git a/src/sheet.rs b/src/sheet.rs
index c2c6cb3..0021891 100644
--- a/src/sheet.rs
+++ b/src/sheet.rs
@@ -1,6 +1,7 @@
 use eframe::egui::widgets::DragValue;
 use eframe::egui::Ui;
 use serde::{Deserialize, Serialize};
+use std::io::Write as _;
 
 use crate::gui::SheetGui;
 
@@ -36,6 +37,12 @@ pub struct CharacterSheet {
     money: u32,
 }
 
+pub fn write_sheet(path: &std::path::Path, sheet: &CharacterSheet) -> std::io::Result<()> {
+    let sheet_str = serde_json::to_string_pretty(&sheet)?;
+    let mut file = std::fs::File::create(path)?;
+    write!(file, "{}", sheet_str)
+}
+
 impl CharacterSheet {
     pub fn character_class(&self) -> &Classe {
         &self.character_class