diff --git a/code/modules/organs/blood.dm b/code/modules/organs/blood.dm
index 8d8573cf1e4..fa0b87ec212 100644
--- a/code/modules/organs/blood.dm
+++ b/code/modules/organs/blood.dm
@@ -229,7 +229,7 @@ var/const/BLOOD_VOLUME_SURVIVE = 122
 
 	if (!injected || !our)
 		return
-	if(blood_incompatible(injected.data["blood_type"],our.data["blood_type"],injected.data["species"],our.data["species"]) && !(mind.vampire))
+	if(blood_incompatible(injected.data["blood_type"],our.data["blood_type"],injected.data["species"],our.data["species"]) && !(mind && mind.vampire))
 		reagents.add_reagent("toxin",amount * 0.5)
 		reagents.update_total()
 	else