diff --git a/scsh/linux/tty-consts.scm b/scsh/linux/tty-consts.scm
index 20c4d2e..a84a00e 100644
--- a/scsh/linux/tty-consts.scm
+++ b/scsh/linux/tty-consts.scm
@@ -41,7 +41,7 @@
 (define ttychar/status		#f)		; ^t icanon 
 
 ;;; Length of control-char string -- *Not Exported*
-(define	num-ttychars		19)
+(define	num-ttychars		32)
 
 ;;; Magic "disable feature" tty character
 (define disable-tty-char (ascii->char #x00))	; _POSIX_VDISABLE