diff --git a/2017/day-18/solution.lua b/2017/day-18/solution.lua
index 8ee8b90..b239524 100755
--- a/2017/day-18/solution.lua
+++ b/2017/day-18/solution.lua
@@ -117,7 +117,7 @@ end
 while true do
 	instr = instructions[iptr[pid]]
 
-	if waiting[0] and waiting[1] then
+	if waiting[pid] then
 		print("Deadlocked!")
 		break
 	end