diff --git a/fitbenchmarking/hessian/numdifftools_hessian.py b/fitbenchmarking/hessian/numdifftools_hessian.py
index b3c53f94e..12e25073a 100644
--- a/fitbenchmarking/hessian/numdifftools_hessian.py
+++ b/fitbenchmarking/hessian/numdifftools_hessian.py
@@ -1,8 +1,6 @@
 """
 Module which calculates numdifftools finite difference approximations
 """
-from functools import lru_cache
-
 import numdifftools as nd
 
 from fitbenchmarking.hessian.base_hessian import Hessian