diff --git a/SimPEG/Inversion.py b/SimPEG/Inversion.py
index 813d201b..56a00f8f 100644
--- a/SimPEG/Inversion.py
+++ b/SimPEG/Inversion.py
@@ -1,6 +1,6 @@
 import SimPEG
 from SimPEG import Utils, sp, np
-from Optimization import Remember, IterationPrinters
+from Optimization import Remember, IterationPrinters, StoppingCriteria
 
 
 class BaseInversion(object):