diff --git a/cooperative_cuisine/validation.py b/cooperative_cuisine/validation.py
index 5bc7aaa02b3ebd2bc3ec18583a7ff76e9c34f334..111edaf73d760b87e97e053b6b55b83420ae578c 100644
--- a/cooperative_cuisine/validation.py
+++ b/cooperative_cuisine/validation.py
@@ -182,7 +182,9 @@ class Validation:
             ]
         )
 
-        before_hash = "".join(sorted(str(sorted([sorted(i) for i in graph.edges]))))
+        before_hash = "".join(
+            sorted(str(sorted([sorted(i) for i in graph.edges])))
+        ) + str(score)
         h = hashlib.new("sha1")
         h.update(before_hash.encode())
         graph_hash = h.hexdigest()