diff --git a/code/modules/atmospherics/gasmixtures/reactions.dm b/code/modules/atmospherics/gasmixtures/reactions.dm
index cdf1a766d9..8e320b2f3e 100644
--- a/code/modules/atmospherics/gasmixtures/reactions.dm
+++ b/code/modules/atmospherics/gasmixtures/reactions.dm
@@ -367,7 +367,7 @@
 	var/old_heat_capacity = air.heat_capacity()
 	var/reaction_efficency = min(1/((pressure/(0.1*ONE_ATMOSPHERE))*(max(cached_gases[/datum/gas/plasma]/cached_gases[/datum/gas/nitrous_oxide],1))),cached_gases[/datum/gas/nitrous_oxide],cached_gases[/datum/gas/plasma]/2)
 	var/energy_released = 2*reaction_efficency*FIRE_CARBON_ENERGY_RELEASED
-	if ((cached_gases[/datum/gas/nitrous_oxide][MOLES] - reaction_efficency < 0 )|| (cached_gases[/datum/gas/plasma][MOLES] - (2*reaction_efficency) < 0) || energy_released <= 0) //Shouldn't produce gas from nothing.
+	if ((cached_gases[/datum/gas/nitrous_oxide] - reaction_efficency < 0 )|| (cached_gases[/datum/gas/plasma] - (2*reaction_efficency) < 0) || energy_released <= 0) //Shouldn't produce gas from nothing.
 		return NO_REACTION
 	cached_gases[/datum/gas/bz] += reaction_efficency
 	if(reaction_efficency == cached_gases[/datum/gas/nitrous_oxide])