diff --git a/source/hid.c b/source/hid.c
index 3247f4a..b6471fb 100644
--- a/source/hid.c
+++ b/source/hid.c
@@ -4,7 +4,12 @@ u32 InputWait() {
     u32 pad_state_old = HID_STATE;
     while (true) {
         u32 pad_state = HID_STATE;
-        if (pad_state ^ pad_state_old)
+        if (pad_state == pad_state_old)
+            continue;
+        // make sure the key is pressed
+        u32 t_pressed = 0;
+        for(; (t_pressed < 0x13000) && (pad_state == HID_STATE); t_pressed++);
+        if (t_pressed >= 0x13000)
             return ~pad_state;
     }
 }