diff --git a/libr/cons/canvas.c b/libr/cons/canvas.c
index e34593fd4d..1e716855d7 100644
--- a/libr/cons/canvas.c
+++ b/libr/cons/canvas.c
@@ -98,13 +98,17 @@ R_API void r_cons_canvas_write(RConsCanvas *c, const char *_s) {
 	char *line, *n;
 
 	str = s = strdup (_s);
-	for (i=0;;i++) {
+	for (i=0; ; i++) {
 		line = getrow (s, &n);
 		p = prefixline (c, &left);
 		slen = R_MIN (left, strlen (line));
+		if (slen<1)
+			break;
 		if (!G (c->x-c->sx+slen, c->y-c->sy)) {
 			// TODO : chop slen
 			slen = (c->w - (c->x-c->sx));
+			if (slen<1)
+				break;
 			continue;
 		}
 		if (!G (c->x-c->sx-slen, c->y-c->sy))