diff --git a/stl/test_boolean_eval.py b/stl/test_boolean_eval.py
index d9cb3b9..113184b 100644
--- a/stl/test_boolean_eval.py
+++ b/stl/test_boolean_eval.py
@@ -1,6 +1,5 @@
 import stl
 import stl.boolean_eval
-import stl.boolean_eval2
 import stl.fastboolean_eval
 import traces
 import unittest
diff --git a/stl/test_parser.py b/stl/test_parser.py
index 00d0d10..3d3d864 100644
--- a/stl/test_parser.py
+++ b/stl/test_parser.py
@@ -1,6 +1,5 @@
 # -*- coding: utf-8 -*-
 import stl
-from nose2.tools import params
 import unittest
 from sympy import Symbol
 
diff --git a/stl/test_synth.py b/stl/test_synth.py
index e1d08ca..ec195e6 100644
--- a/stl/test_synth.py
+++ b/stl/test_synth.py
@@ -1,7 +1,6 @@
 import stl
 import stl.synth
 import traces
-from nose2.tools import params
 import unittest
 from sympy import Symbol
 
diff --git a/stl/test_utils.py b/stl/test_utils.py
index 652724f..7c0c3f8 100644
--- a/stl/test_utils.py
+++ b/stl/test_utils.py
@@ -1,7 +1,6 @@
 import stl
 import stl.utils
 import pandas as pd
-from nose2.tools import params
 import unittest
 from sympy import Symbol