diff --git a/config/config.default.php b/config/config.default.php
index bd3415da..6db1441a 100644
--- a/config/config.default.php
+++ b/config/config.default.php
@@ -43,7 +43,7 @@ $shift_sum_formula = "SUM(
     (HOUR(FROM_UNIXTIME(`Shifts`.`end`)) > 2 AND HOUR(FROM_UNIXTIME(`Shifts`.`end`)) < 6)
     OR (HOUR(FROM_UNIXTIME(`Shifts`.`start`)) > 2 AND HOUR(FROM_UNIXTIME(`Shifts`.`start`)) < 6)
     OR (HOUR(FROM_UNIXTIME(`Shifts`.`start`)) <= 2 AND HOUR(FROM_UNIXTIME(`Shifts`.`end`)) >= 6)
-  ))*(`Shifts`.`end` - `Shifts`.`start`)*(-2 * `ShiftEntry`.`freeloaded`)
+  ))*(`Shifts`.`end` - `Shifts`.`start`)*(1 - 3 * `ShiftEntry`.`freeloaded`)
 )";
 
 // weigh every shift the same