diff --git a/code/modules/projectiles/ammo_boxes/round_boxes.dm b/code/modules/projectiles/ammo_boxes/round_boxes.dm
index 81dfdfdab3..146f576b59 100644
--- a/code/modules/projectiles/ammo_boxes/round_boxes.dm
+++ b/code/modules/projectiles/ammo_boxes/round_boxes.dm
@@ -48,6 +48,7 @@
 	overlay_content = "_reg"
 	default_ammo = /datum/ammo/bullet/smartgun
 	caliber = "10x28mm"
+	bullet_amount = 1000
 	max_bullet_amount = 1000
 
 /obj/item/ammo_box/rounds/smartgun/empty