diff --git a/src/state.rs b/src/state.rs
index ba68fe9..f7ea83a 100644
--- a/src/state.rs
+++ b/src/state.rs
@@ -48,7 +48,7 @@ impl EmuState {
                             }
                         }
                         ActionSwitch::SingleStep => {
-                            if state == SwitchState::Up {
+                            if state != SwitchState::Neut {
                                 self.run_cpu_cycle();
                             }
                         }