diff --git a/SimPEG/Problem.py b/SimPEG/Problem.py
index 4b940318..dff99a97 100644
--- a/SimPEG/Problem.py
+++ b/SimPEG/Problem.py
@@ -1,7 +1,6 @@
 import Utils, Survey, Models, numpy as np, scipy.sparse as sp
 Solver = Utils.SolverUtils.Solver
 import Maps, Mesh
-import copy
 
 
 class Fields(object):