diff --git a/asminc/atari.inc b/asminc/atari.inc
index 7c46b3252..c2a210ea0 100644
--- a/asminc/atari.inc
+++ b/asminc/atari.inc
@@ -924,7 +924,7 @@ KEY_QUESTIONMARK    = KEY_SLASH | KEY_SHIFT
 KEY_CLEAR           = KEY_LESSTHAN | KEY_SHIFT
 KEY_INSERT          = KEY_GREATERTHAN | KEY_SHIFT
 
-KEY_UP              = KEY_UNDERLINE | KEY_CTRL
+KEY_UP              = KEY_DASH | KEY_CTRL
 KEY_DOWN            = KEY_EQUALS | KEY_CTRL
 KEY_LEFT            = KEY_PLUS | KEY_CTRL
 KEY_RIGHT           = KEY_ASTERISK | KEY_CTRL