diff --git a/LT_remote_control_box.md b/LT_remote_control_box.md
index ab4a3d9..8a41c4a 100644
--- a/LT_remote_control_box.md
+++ b/LT_remote_control_box.md
@@ -30,7 +30,7 @@ datasheet: https://www.vishay.com/docs/82459/tsop48.pdf
 
 - pin 16 - IR RX
 - pin 17 - IR TX
-- pin 18 - button 3
+- pin 18 - button
 - pin 19 - button
 - pin 20 - button
 - pin 21 - button