diff --git a/wip-duuqnd/editor/editor.lisp b/wip-duuqnd/editor/editor.lisp
index cf56cf1..acf2ef4 100644
--- a/wip-duuqnd/editor/editor.lisp
+++ b/wip-duuqnd/editor/editor.lisp
@@ -126,6 +126,7 @@ serial connection the editor normally runs under.")
 
 
 (defun move-cursor (row col)
+  (assert (and (integerp row) (integerp col)))
   (write-byte #x1B *eio*)
   (write-char #\[ *eio*)
   (format *eio* "~D;~DH" row (1+ col))
@@ -474,7 +475,7 @@ Additionally ensures correct line numbers on the way, as a bonus."
   ((%buffer :accessor buffer :initarg :buffer)
    (%top-line :accessor top-line :initform nil)
    (%bottom-line :accessor bottom-line :initform nil)
-   (%height :accessor height :initform 20)))
+   (%height :accessor height :initform 23)))
 
 (defmacro do-view-lines ((line local-line-number) view &body body)
   `(loop :repeat (height ,view)