diff --git a/minio/api.py b/minio/api.py
index 2dcffa854..23d3f7fa0 100644
--- a/minio/api.py
+++ b/minio/api.py
@@ -1997,9 +1997,15 @@ def remove_objects(self, bucket_name, delete_object_list,
                 print("error occurred when deleting object", error)
 
             # Remove a prefix recursively.
-            delete_object_list = map(
-                lambda x: DeleteObject(x.object_name),
-                client.list_objects("my-bucket", "my/prefix/", recursive=True),
+            delete_object_list = list(
+                map(
+                    lambda x: DeleteObject(x.object_name),
+                    client.list_objects(
+                        "my-bucket",
+                        "my/prefix/",
+                        recursive=True,
+                    ),
+                )
             )
             errors = client.remove_objects("my-bucket", delete_object_list)
             for error in errors: