diff --git a/code/modules/mob/living/carbon/human/human_damage.dm b/code/modules/mob/living/carbon/human/human_damage.dm
index cf74bb7e96a..9469b36aec6 100644
--- a/code/modules/mob/living/carbon/human/human_damage.dm
+++ b/code/modules/mob/living/carbon/human/human_damage.dm
@@ -245,7 +245,7 @@
 This function restores the subjects blood to max.
 */
 /mob/living/carbon/human/proc/restore_blood()
-	if(!species.flags & NO_BLOOD)
+	if(!(species.flags & NO_BLOOD))
 		var/blood_volume = vessel.get_reagent_amount("blood")
 		vessel.add_reagent("blood",560.0-blood_volume)