diff --git a/src/sna/sna_accel.c b/src/sna/sna_accel.c
index 7b8f7616..d7761039 100644
--- a/src/sna/sna_accel.c
+++ b/src/sna/sna_accel.c
@@ -2638,7 +2638,7 @@ sna_poly_zero_line_blt(DrawablePtr drawable,
 				b->x2++;
 				b->y2++;
 				if (oc1 | oc2)
-					box_intersect(b, &clip.extents);
+					box_intersect(b, extents);
 				if (++b == last_box) {
 					ret = &&rectangle_continue;
 					goto *jump;
@@ -3431,7 +3431,7 @@ sna_poly_zero_segment_blt(DrawablePtr drawable,
 				b->x2++;
 				b->y2++;
 				if (oc1 | oc2)
-					box_intersect(b, &clip.extents);
+					box_intersect(b, extents);
 				if (++b == last_box) {
 					ret = &&rectangle_continue;
 					goto *jump;