diff --git a/src/main.rs b/src/main.rs
index 7ee8380..fb023e2 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -167,7 +167,6 @@ impl AltairEmulator {
             MemCycle::IntaHlt(_) => todo!(),
         };
         self.cpu.finish_m_cycle(data);
-        self.update_fp();
     }
 
     fn show_menubar(&mut self, ui: &mut Ui) {
@@ -237,6 +236,7 @@ impl AltairEmulator {
                             frontpanel::ActionSwitch::SingleStep => {
                                 if state == SwitchState::Up {
                                     self.run_cpu_cycle();
+                                    self.update_fp();
                                 }
                             }
                             frontpanel::ActionSwitch::Examine => {
@@ -307,6 +307,8 @@ impl eframe::App for AltairEmulator {
         egui::CentralPanel::default().show(ctx, |ui| self.show_frontpanel(ui));
         if self.running {
             self.run_cpu_cycle();
+            self.update_fp();
+
         }
         if let Some(option_window) = self.option_window.as_mut() {
             if option_window.draw(ctx, &mut self.options) {