diff --git a/code/modules/reagents/Chemistry-Reagents.dm b/code/modules/reagents/Chemistry-Reagents.dm
index 4ff26510884..e4382699c39 100644
--- a/code/modules/reagents/Chemistry-Reagents.dm
+++ b/code/modules/reagents/Chemistry-Reagents.dm
@@ -2814,8 +2814,8 @@ datum
 				if (adj_drowsy)	M.drowsyness = max(0,M.drowsyness + adj_drowsy)
 				if (adj_sleepy) M.sleeping = max(0,M.sleeping + adj_sleepy)
 
-				if(!src.data) data = 1
-				src.data += boozepwr
+				if(!src.data || (!isnum(src.data)  && src.data.len)) data = 1   //if it doesn't exist we set it.  if it's a list we're going to set it to 1 as well.  This is to
+				src.data += boozepwr						//avoid a runtime error associated with drinking blood mixed in drinks (demon's blood).
 
 				var/d = data
 
@@ -3363,7 +3363,6 @@ datum
 			description = "AHHHH!!!!"
 			color = "#820000" // rgb: 130, 0, 0
 			boozepwr = 3
-
 		ethanol/vodkatonic
 			name = "Vodka and Tonic"
 			id = "vodkatonic"