diff --git a/et-tracker/defaults/defaults.nl b/et-tracker/defaults/defaults.nl
index e8d2e43..2570796 100644
--- a/et-tracker/defaults/defaults.nl
+++ b/et-tracker/defaults/defaults.nl
@@ -8,4 +8,4 @@ Blim=15.,
 Vlim=0.,
 been_tc_thres=6,
 numconsec=3,
-vt_calc_method="simple",
+vt_calc_method="regline",