Index: trunk/src/polygon.c
===================================================================
--- trunk/src/polygon.c	(revision 30062)
+++ trunk/src/polygon.c	(revision 30063)
@@ -333,8 +333,8 @@
 	p->Clipped = biggest(merged);
 	assert(!p->Clipped || pcb_poly_valid(p->Clipped));
 	if (!p->Clipped)
-		pcb_message(PCB_MSG_WARNING, "Polygon cleared out of existence near (%$mm, %$mm)\n",
-						(p->BoundingBox.X1 + p->BoundingBox.X2) / 2, (p->BoundingBox.Y1 + p->BoundingBox.Y2) / 2);
+		pcb_message(PCB_MSG_WARNING, "Polygon #%ld cleared out of existence near (%$mm, %$mm)\n",
+						p->ID, (p->BoundingBox.X1 + p->BoundingBox.X2) / 2, (p->BoundingBox.Y1 + p->BoundingBox.Y2) / 2);
 	return 1;
 }