diff --git a/tty-term.c b/tty-term.c
index 09ff9b1e..0c22b527 100644
--- a/tty-term.c
+++ b/tty-term.c
@@ -388,21 +388,6 @@ tty_term_find(char *name, int fd, const char *overrides, char **cause)
 		xasprintf(cause, "terminal does not support cud1 or cud");
 		goto error;
 	}
-	if (!tty_term_has(term, TTYC_IL1) && !tty_term_has(term, TTYC_IL)) {
-		xasprintf(cause, "terminal does not support il1 or il");
-		goto error;
-	}
-	if (!tty_term_has(term, TTYC_DL1) && !tty_term_has(term, TTYC_DL)) {
-		xasprintf(cause, "terminal does not support dl1 or dl");
-		goto error;
-	}
-	if (!tty_term_has(term, TTYC_ICH1) &&
-	    !tty_term_has(term, TTYC_ICH) && (!tty_term_has(term, TTYC_SMIR) ||
-	    !tty_term_has(term, TTYC_RMIR))) {
-		xasprintf(cause,
-		    "terminal does not support ich1 or ich or smir and rmir");
-		goto error;
-	}
 
 	/* Figure out if we have 256 or 88 colours. */
 	if (tty_term_number(term, TTYC_COLORS) == 256)
diff --git a/tty.c b/tty.c
index a3aeda5d..84931e78 100644
--- a/tty.c
+++ b/tty.c
@@ -569,12 +569,14 @@ tty_cmd_insertcharacter(struct tty *tty, const struct tty_ctx *ctx)
 	if (tty_term_has(tty->term, TTYC_ICH) ||
 	    tty_term_has(tty->term, TTYC_ICH1))
 		tty_emulate_repeat(tty, TTYC_ICH, TTYC_ICH1, ctx->num);
-	else {
+	else if (tty_term_has(tty->term, TTYC_SMIR) && 
+	    tty_term_has(tty->term, TTYC_RMIR)) {
 		tty_putcode(tty, TTYC_SMIR);
 		for (i = 0; i < ctx->num; i++)
 			tty_putc(tty, ' ');
 		tty_putcode(tty, TTYC_RMIR);
-	}
+	} else
+		tty_draw_line(tty, wp->screen, ctx->ocy, wp->xoff, wp->yoff);
 }
 
 void
@@ -606,7 +608,8 @@ tty_cmd_insertline(struct tty *tty, const struct tty_ctx *ctx)
 	struct screen		*s = wp->screen;
 
  	if (wp->xoff != 0 || screen_size_x(s) < tty->sx ||
-	    !tty_term_has(tty->term, TTYC_CSR)) {
+	    !tty_term_has(tty->term, TTYC_CSR) || 
+	    !tty_term_has(tty->term, TTYC_IL1)) {
 		tty_redraw_region(tty, ctx);
 		return;
 	}
@@ -626,7 +629,8 @@ tty_cmd_deleteline(struct tty *tty, const struct tty_ctx *ctx)
 	struct screen		*s = wp->screen;
 
  	if (wp->xoff != 0 || screen_size_x(s) < tty->sx ||
-	    !tty_term_has(tty->term, TTYC_CSR)) {
+	    !tty_term_has(tty->term, TTYC_CSR) ||
+	    !tty_term_has(tty->term, TTYC_DL1)) {
 		tty_redraw_region(tty, ctx);
 		return;
 	}