diff --git a/fakeredis.py b/fakeredis.py
index 750c67b..19c784e 100644
--- a/fakeredis.py
+++ b/fakeredis.py
@@ -380,7 +380,7 @@ def sort(self, name, start=None, num=None, by=None, get=None, desc=False,
             raise redis.RedisError(
                 "RedisError: ``start`` and ``num`` must both be specified")
         try:
-            data = self._db[name][:]
+            data = list(self._db[name])[:]
             if by is not None:
                 # _sort_using_by_arg mutates data so we don't
                 # need need a return value.
diff --git a/test_fakeredis.py b/test_fakeredis.py
index 4b8d32e..191e755 100644
--- a/test_fakeredis.py
+++ b/test_fakeredis.py
@@ -1250,6 +1250,12 @@ def test_sort_with_hash(self):
             self.redis.sort('foo', by='record_*->age', get='record_*->name'),
             ['baby', 'teen', 'adult'])
 
+    def test_sort_with_set(self):
+        self.redis.sadd('foo', '3')
+        self.redis.sadd('foo', '1')
+        self.redis.sadd('foo', '2')
+        self.assertEqual(self.redis.sort('foo'), ['1', '2', '3'])
+
     def test_pipeline(self):
         # The pipeline method returns an object for
         # issuing multiple commands in a batch.