diff --git a/defines.h b/defines.h
index b710333..0962da3 100644
--- a/defines.h
+++ b/defines.h
@@ -14,5 +14,7 @@
 #define CTLX    0x40000000	/* ^X flag, or'ed in            */
 #define	SPEC	0x80000000	/* special key (function keys)  */
 
-#define MAXCOL	500
-#define MAXROW	500
+/* Actual 380x134 on a 1920x1080 screen in landscape,
+   if smaller font or portrait orientation limit to 400x150 */
+#define MAXCOL	400
+#define MAXROW	150
diff --git a/tcap.c b/tcap.c
index 07434d5..7c73511 100644
--- a/tcap.c
+++ b/tcap.c
@@ -164,6 +164,11 @@ static void tcapopen(void)
 /* At initialization we use maximum size even if current OS window is smaller */
 		term.t_mrow = MAXROW ;
 		term.t_mcol = MAXCOL ;
+		if( term.t_nrow >= term.t_mrow)
+			term.t_nrow = term.t_mrow - 1 ;
+
+		if( term.t_ncol > term.t_mcol)
+			term.t_ncol = term.t_mcol ;
 #else
 		term.t_mrow = term.t_nrow > MAXROW ? MAXROW : term.t_nrow;
 		term.t_mcol = term.t_ncol > MAXCOL ? MAXCOL : term.t_ncol;