diff --git a/pro_micro_timed-key/pro_micro_timed-key.ino b/pro_micro_timed-key/pro_micro_timed-key.ino
index 5fa6a39..86a1a4c 100644
--- a/pro_micro_timed-key/pro_micro_timed-key.ino
+++ b/pro_micro_timed-key/pro_micro_timed-key.ino
@@ -17,10 +17,10 @@ void loop() {
   if (buttonState == HIGH) {
     Serial.println("click");
     
-    // press right ctrl
-    Keyboard.press(132);
-    delay(10);
-    Keyboard.release(132);
+    // press key
+    Keyboard.press(129);  // https://www.arduino.cc/reference/en/language/functions/usb/keyboard/keyboardmodifiers/
+    delay(2);
+    Keyboard.release(129);
   }
   else {
     Serial.println("LOW");