Index: polygon.h
===================================================================
--- polygon.h	(revision 4765)
+++ polygon.h	(revision 4766)
@@ -71,7 +71,7 @@
 POLYAREA *CirclePoly(Coord x, Coord y, Coord radius);
 POLYAREA *OctagonPoly(Coord x, Coord y, Coord radius, int style);
 POLYAREA *LinePoly(pcb_line_t * l, Coord thick);
-POLYAREA *ArcPoly(ArcType * l, Coord thick);
+POLYAREA *ArcPoly(pcb_arc_t * l, Coord thick);
 POLYAREA *PinPoly(PinType * l, Coord thick, Coord clear);
 POLYAREA *BoxPolyBloated(pcb_box_t * box, Coord radius);
 void frac_circle(PLINE *, Coord, Coord, Vector, int);