diff --git a/code/__DEFINES/atmospherics.dm b/code/__DEFINES/atmospherics.dm
index e33130e827fe..756407a678f1 100644
--- a/code/__DEFINES/atmospherics.dm
+++ b/code/__DEFINES/atmospherics.dm
@@ -158,7 +158,7 @@
 #define AIRLESS_ATMOS				"TEMP=2.7" //space
 #define FROZEN_ATMOS				"o2=22;n2=82;TEMP=180" //-93.15°C snow and ice turfs
 #define KITCHEN_COLDROOM_ATMOS		"o2=33;n2=124;TEMP=193.15" //-80°C kitchen coldroom; higher amount of mol to reach about 101.3 kpA
-#define BURNMIX_ATMOS				"o2=2500;plasma=5000;TEMP=370" //used in the holodeck burn test program
+#define BURNMIX_ATMOS				"o2=100;plasma=200;TEMP=370" //used in the holodeck burn test program
 
 //ATMOSPHERICS DEPARTMENT GAS TANK TURFS
 #define ATMOS_TANK_N2O				"n2o=6000;TEMP=293.15"