diff --git a/Day8.cs b/Day8.cs
index 0822c18..f889141 100644
--- a/Day8.cs
+++ b/Day8.cs
@@ -1,7 +1,7 @@
 #define Day8
+#if Day8
 using System.Collections.Immutable;
 
-#if Day8
 var allSignals = File.ReadLines("day8/input").Select(l => {
     var seg = l.Split(" ").Where(s => s != "|")
         .ToList();