diff --git a/io/key/key.go b/io/key/key.go
index 639e9296..af31e3e6 100644
--- a/io/key/key.go
+++ b/io/key/key.go
@@ -219,10 +219,6 @@ const (
 	NameF10            = "F10"
 	NameF11            = "F11"
 	NameF12            = "F12"
-	NameUp             = "Up"
-	NameDown           = "Down"
-	NameLeft           = "Left"
-	NameRight          = "Right"
 	NameBack           = "Back"
 )