diff --git a/tests/retrieve/test_qpe.py b/tests/retrieve/test_qpe.py
index fc750e2fe2..a4741dca7f 100644
--- a/tests/retrieve/test_qpe.py
+++ b/tests/retrieve/test_qpe.py
@@ -1,7 +1,7 @@
 """ Unit tests for rainfall rate estimation module. """
 
-from numpy.testing import assert_allclose
 import numpy as np
+from numpy.testing import assert_allclose
 
 import pyart
 
@@ -155,6 +155,7 @@ def test_get_coeff_rkdp():
     coeff_rkdp_use_x = pyart.retrieve.qpe._get_coeff_rkdp(13e9)
     assert coeff_rkdp_use_x == (15.81, 0.7992)
 
+
 def test_precip_rate():
     grid = pyart.testing.make_storm_grid()
     grid = pyart.retrieve.ZtoR(grid)