Index: thermal.c
===================================================================
--- thermal.c	(revision 12607)
+++ thermal.c	(revision 12608)
@@ -562,7 +562,7 @@
 		case PCB_THERMAL_SHARP:
 			switch(shp->shape) {
 				case PCB_PSSH_CIRC:
-					return ThermPoly_(pcb, ps->x + shp->data.circ.x, ps->y + shp->data.circ.y, shp->data.circ.dia, ps->Clearance, pcb_themal_style_new2old(thr));
+					return ThermPoly_(pcb, ps->x + shp->data.circ.x, ps->y + shp->data.circ.y, shp->data.circ.dia, ps->Clearance*2, pcb_themal_style_new2old(thr));
 				case PCB_PSSH_LINE:
 				{
 					pcb_line_t ltmp;