diff --git a/code/modules/mob/living/blood.dm b/code/modules/mob/living/blood.dm
index eabf2e2d0e..0d55f252db 100644
--- a/code/modules/mob/living/blood.dm
+++ b/code/modules/mob/living/blood.dm
@@ -264,7 +264,7 @@
 		"O-" = list("O-","SY"),
 		"O+" = list("O-", "O+","SY"),
 		"L" = list("L","SY"),
-		"U" = list("A-", "A+", "B-", "B+", "O-", "O+", "AB-", "AB+", "L", "U","SY"),
+		"U" = list("A-", "A+", "B-", "B+", "O-", "O+", "AB-", "AB+", "L", "U","SY", "BUG"),
 		"HF" = list("HF", "SY"),
 		"X*" = list("X*", "SY"),
 		"SY" = list("SY"),