diff --git a/src/terminal/draw.c b/src/terminal/draw.c
index 93382b4d..6deb72a0 100644
--- a/src/terminal/draw.c
+++ b/src/terminal/draw.c
@@ -503,6 +503,8 @@ draw_text(struct terminal *term, int x, int y,
 	assert(text && length >= 0);
 	if_assert_failed return;
 
+	if (x >= term->width || y >= term->height) return;
+
 #ifdef CONFIG_UTF8
 	if (term->utf8_cp) {
 		draw_text_utf8(term, x, y, text, length, attr, color);
diff --git a/src/util/box.h b/src/util/box.h
index 4e3a36b9..b155dd2b 100644
--- a/src/util/box.h
+++ b/src/util/box.h
@@ -46,10 +46,10 @@ colspan_is_in_box(struct box *box, int x, int span)
 static inline void
 set_box(struct box *box, int x, int y, int width, int height)
 {
-	box->x = x;
-	box->y = y;
-	box->width = width;
-	box->height = height;
+	box->x = int_max(0, x);
+	box->y = int_max(0, y);
+	box->width = int_max(0, width);
+	box->height = int_max(0, height);
 }
 
 /** @relates box */