diff --git a/src/main.rs b/src/main.rs
index 79a0936..1f9277e 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -13,11 +13,11 @@ use utils::{is_delta_format_valid, str_to_sec};
 use std::fs;
 
 use iced::widget::{TextInput, column, text};
-use iced::{Element, Font, Subscription};
 use iced::{
     Color, Length, Task, Theme,
     widget::{Column, button, canvas, container, pick_list, row, scrollable, slider},
 };
+use iced::{Element, Font, Subscription};
 use iced_aw::widget::color_picker;
 
 use std::f32::consts::PI;
@@ -97,12 +97,6 @@ impl MyApp {
     }
     fn update(&mut self, message: Message) {
         match message {
-            Message::ButtonPressedIncrement => self.music.nb_sec_for_rev += 0.5,
-            Message::ButtonPressedDecrement => {
-                if self.music.nb_sec_for_rev > 0.5 {
-                    self.music.nb_sec_for_rev -= 0.5;
-                }
-            }
             Message::AddPolygon(s) => {
                 self.music.add_polygon(self.current_delta, s);
             }