diff --git a/code/modules/surgery/organs/lungs.dm b/code/modules/surgery/organs/lungs.dm
index 64be29c339..afc8f3f24c 100644
--- a/code/modules/surgery/organs/lungs.dm
+++ b/code/modules/surgery/organs/lungs.dm
@@ -288,7 +288,7 @@
 		gas_breathed = breath_gases[/datum/gas/stimulum]
 		if (gas_breathed > gas_stimulation_min)
 			var/existing = H.reagents.get_reagent_amount("stimulum")
-			H.reagents.add_reagent("stimulum",max(0, 1 - existing))
+			H.reagents.add_reagent("stimulum", max(0, 5 - existing))
 		breath_gases[/datum/gas/stimulum]-=gas_breathed
 
 	// Miasma