Index: thermal.c
===================================================================
--- thermal.c	(revision 12595)
+++ thermal.c	(revision 12596)
@@ -617,7 +617,7 @@
 		case PCB_OBJ_POLYGON:
 			return pcb_thermal_area_poly(pcb, (pcb_poly_t *)obj, lid);
 
-		case PCB_OBJ_PADSTACK:
+		case PCB_OBJ_PSTK:
 			return pcb_thermal_area_pstk(pcb, (pcb_pstk_t *)obj, lid);
 
 		case PCB_OBJ_ARC: