diff --git a/code/modules/clothing/spacesuits/plasmamen.dm b/code/modules/clothing/spacesuits/plasmamen.dm
index d75e5407798..97eb723c77e 100644
--- a/code/modules/clothing/spacesuits/plasmamen.dm
+++ b/code/modules/clothing/spacesuits/plasmamen.dm
@@ -59,11 +59,11 @@
 	if (!istype(tool, /obj/item/extinguisher_refill))
 		return
 
-	if (extinguishes_left == 5)
+	if (extinguishes_left == initial(extinguishes_left))
 		to_chat(user, span_notice("The inbuilt extinguisher is full."))
 		return ITEM_INTERACT_BLOCKING
 
-	extinguishes_left = 5
+	extinguishes_left = initial(extinguishes_left)
 	to_chat(user, span_notice("You refill the suit's built-in extinguisher, using up the cartridge."))
 	check_fire_state()
 	qdel(tool)