diff --git a/impedance/tests/test_preprocessing.py b/impedance/tests/test_preprocessing.py
index 2f23a0e..8a96a9a 100644
--- a/impedance/tests/test_preprocessing.py
+++ b/impedance/tests/test_preprocessing.py
@@ -1,4 +1,4 @@
-from impedance.preprocessing import readFile, readGamry, readZPlot,\
+from impedance.preprocessing import readFile, readGamry, readZPlot, \
                                     readBioLogic, ignoreBelowX, \
                                     cropFrequencies, readCSV, saveCSV
 import numpy as np