diff --git a/code/modules/vehicles/mecha/combat/durand.dm b/code/modules/vehicles/mecha/combat/durand.dm
index b44478582c0..c6fcae75bc9 100644
--- a/code/modules/vehicles/mecha/combat/durand.dm
+++ b/code/modules/vehicles/mecha/combat/durand.dm
@@ -271,7 +271,9 @@ own integrity back to max. Shield is automatically dropped if we run out of powe
 		return
 	. = ..()
 	flick("shield_impact", src)
-	if(!chassis.use_energy((max_integrity - atom_integrity) * 0.1 * STANDARD_CELL_CHARGE))
+	if(!.)
+		return
+	if(!chassis.use_energy(. * (STANDARD_CELL_CHARGE / 15)))
 		chassis.cell?.charge = 0
 		for(var/O in chassis.occupants)
 			var/mob/living/occupant = O