diff --git a/code/modules/mob/living/carbon/human/life.dm b/code/modules/mob/living/carbon/human/life.dm
index 012df7725ee..afce6b0065b 100644
--- a/code/modules/mob/living/carbon/human/life.dm
+++ b/code/modules/mob/living/carbon/human/life.dm
@@ -344,7 +344,7 @@
 		//exposure to extreme pressures can rupture lungs
 		var/check_pressure = breath.return_pressure()
 		if(check_pressure < ONE_ATMOSPHERE / 5 || check_pressure > ONE_ATMOSPHERE * 5)
-			if(is_lung_ruptured() && prob(5))
+			if(!is_lung_ruptured() && prob(5))
 				rupture_lung()
 
 	return breath