Index: hid_draw_helpers.c
===================================================================
--- hid_draw_helpers.c	(revision 17239)
+++ hid_draw_helpers.c	(revision 17240)
@@ -84,7 +84,7 @@
 
 	/* Optimization: if the polygon has no holes and is smaller the clip_box,
 	   it is safe to draw directly */
-	if ((clip_box->X1 < pl->xmin) && (clip_box->X2 > pl->xmax) && (clip_box->Y1 < pl->ymin) && (clip_box->Y2 > pl->ymax)) {
+	if ((clip_box->X1 <= pl->xmin) && (clip_box->X2 >= pl->xmax) && (clip_box->Y1 <= pl->ymin) && (clip_box->Y2 >= pl->ymax)) {
 		fill_contour(gc, pl);
 		return;
 	}