diff --git a/rapids/models.py b/rapids/models.py
index 329b3fcd..91acd0bd 100644
--- a/rapids/models.py
+++ b/rapids/models.py
@@ -462,7 +462,7 @@ class RapidImage(models.Model):
                 print(dataset)
                 flatten = dataset.pixel_array.flatten()
                 print("flatteded")
-                pre_join = [str(i) for i in list(flatten)]
+                pre_join = [str(i) for i in flatten]
                 print(pre_join)
                 hash = hashlib.md5(",".join(pre_join).encode()).hexdigest()