diff --git a/code/modules/defenses/sentry.dm b/code/modules/defenses/sentry.dm
index 6c9c5ad68fea..02bccde9fa37 100644
--- a/code/modules/defenses/sentry.dm
+++ b/code/modules/defenses/sentry.dm
@@ -313,7 +313,7 @@
 	new_projectile.damage *= damage_mult
 	new_projectile.accuracy *= accuracy_mult
 	GIVE_BULLET_TRAIT(new_projectile, /datum/element/bullet_trait_iff, faction_group)
-	new_projectile.fire_at(target, src, owner_mob, new_projectile.ammo.max_range, new_projectile.ammo.shell_speed, null, FALSE)
+	new_projectile.fire_at(target, owner_mob, src, new_projectile.ammo.max_range, new_projectile.ammo.shell_speed, null, FALSE)
 	muzzle_flash(Get_Angle(get_turf(src), target))
 	ammo.current_rounds--
 	track_shot()
diff --git a/code/modules/defenses/sentry_flamer.dm b/code/modules/defenses/sentry_flamer.dm
index 2c5e9ae62677..fb6b8d199e1e 100644
--- a/code/modules/defenses/sentry_flamer.dm
+++ b/code/modules/defenses/sentry_flamer.dm
@@ -32,7 +32,7 @@
 	var/obj/projectile/P = new(create_cause_data(initial(name), owner_mob))
 	P.generate_bullet(new ammo.default_ammo)
 	GIVE_BULLET_TRAIT(P, /datum/element/bullet_trait_iff, faction_group)
-	P.fire_at(A, src, owner_mob, P.ammo.max_range, P.ammo.shell_speed, null)
+	P.fire_at(A, owner_mob, src, P.ammo.max_range, P.ammo.shell_speed, null)
 	ammo.current_rounds--
 	track_shot()
 	if(ammo.current_rounds == 0)