diff --git a/src/lib.rs b/src/lib.rs
index 6a1a828..fac3d2c 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -180,7 +180,7 @@ pub extern "C" fn chuni_io_jvs_read_coin_counter(total: *mut u16) {
     let coin_pressed = (input[1] & 4) != 0;
 
     if coin_pressed || unsafe { GetAsyncKeyState(CONFIGURATION.coin_key as c_int) } != 0 {
-        let coin_previously_pressed = COIN_PRESSED.fetch_or(true, Ordering::Relaxed);
+        let coin_previously_pressed = COIN_PRESSED.fetch_xor(true, Ordering::Relaxed);
         if !coin_previously_pressed {
             COIN_COUNT.fetch_add(1, Ordering::Relaxed);
         }