Index: remove.c
===================================================================
--- remove.c	(revision 1177)
+++ remove.c	(revision 1178)
@@ -167,11 +167,8 @@
 	r_delete_entry(Layer->polygon_tree, (BoxTypePtr) Polygon);
 	FreePolygonMemory(Polygon);
 
-	Layer->Polygon = g_list_remove(Layer->Polygon, Polygon);
-	Layer->PolygonN--;
+	RemoveFreePolygon(Polygon);
 
-	g_slice_free(PolygonType, Polygon);
-
 	return NULL;
 }