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}");
                         }
                     }
                 });