diff --git a/src/k_waypoint.c b/src/k_waypoint.c
index 27465856a..ca4746357 100644
--- a/src/k_waypoint.c
+++ b/src/k_waypoint.c
@@ -586,7 +586,7 @@ static void K_DebugWaypointDrawRadius(waypoint_t *const waypoint)
 	radiusOrb->tics = 1;
 
 	radiusOrb->frame &= ~FF_TRANSMASK;
-	radiusOrb->frame |= FF_FULLBRIGHT;
+	radiusOrb->frame |= FF_FULLBRIGHT|FF_REVERSESUBTRACT;
 	radiusOrb->color = SKINCOLOR_PURPLE;
 	radiusOrb->renderflags |= RF_ALWAYSONTOP;