diff --git a/code/_onclick/xeno.dm b/code/_onclick/xeno.dm
index e9828ed264ec..4c56e652b11d 100644
--- a/code/_onclick/xeno.dm
+++ b/code/_onclick/xeno.dm
@@ -54,8 +54,9 @@
 					var/turf/target_turf = target
 					for(var/obj/flamer_fire/fire in target_turf)
 						firepatted = TRUE
-						if(!(caste.fire_immunity & FIRE_IMMUNITY_NO_DAMAGE) || fire.tied_reagent.fire_penetrating)
-							apply_damage(max(fire.burnlevel/2-check_fire_intensity_resistance() , 0), BURN,fire)
+						if(!(caste.fire_immunity & FIRE_IMMUNITY_NO_DAMAGE) || fire.tied_reagent?.fire_penetrating)
+							var/firedamage = max(fire.burnlevel - check_fire_intensity_resistance(), 0) * 0.5
+							apply_damage(firedamage, BURN, fire)
 						if((fire.firelevel > fire_level_to_extinguish) && (!fire.fire_variant)) //If fire_variant = 0, default fire extinguish behavior.
 							fire.firelevel -= fire_level_to_extinguish
 							fire.update_flame()