diff --git a/aoc.py b/aoc.py
index 731f7e9..ee3781f 100644
--- a/aoc.py
+++ b/aoc.py
@@ -63,7 +63,7 @@ class AOCDay:
         if len(self.input) == 1:
             return self.input[0]
         else:
-            return self.input
+            return self.input.copy()
 
     def getInputListAsType(self, return_type: Type) -> List:
         """