diff --git a/autompc/control/nmpc.py b/autompc/control/nmpc.py
index 03ba4d7..1edafd1 100644
--- a/autompc/control/nmpc.py
+++ b/autompc/control/nmpc.py
@@ -1,4 +1,3 @@
-from collections import Iterable
 from .controller import Controller, ControllerFactory
 from pdb import set_trace
 import ConfigSpace as CS