diff --git a/code/game/blood.dm b/code/game/blood.dm
index 9628bfec54..27e7eaa0cc 100644
--- a/code/game/blood.dm
+++ b/code/game/blood.dm
@@ -37,6 +37,9 @@
 	blood_overlay.color = b_color
 
 /mob/living/carbon/human/add_blood(b_color = "#830303", blood_flags = BLOOD_ALL)
+	if(b_color == BLOOD_COLOR_XENO || b_color == BLOOD_COLOR_XENO_ROYAL)
+		return FALSE
+
 	if(blood_flags & BLOOD_BODY)
 		if(wear_suit)
 			wear_suit.add_blood(b_color)
diff --git a/code/game/objects/effects/decals/cleanable/blood/blood.dm b/code/game/objects/effects/decals/cleanable/blood/blood.dm
index 9fd5e79965..bbf7725b75 100644
--- a/code/game/objects/effects/decals/cleanable/blood/blood.dm
+++ b/code/game/objects/effects/decals/cleanable/blood/blood.dm
@@ -48,7 +48,8 @@
 	// can make footprints
 	if(!amount || !ishuman(AM))
 		return
-
+	if(basecolor == BLOOD_COLOR_XENO || basecolor == BLOOD_COLOR_XENO_ROYAL)
+		return FALSE
 	if(SSticker.mode && MODE_HAS_TOGGLEABLE_FLAG(MODE_BLOOD_OPTIMIZATION))
 		return