diff --git a/skimage/exposure/tests/test_unwrap.py b/skimage/exposure/tests/test_unwrap.py
index 8de57c92..4a329928 100644
--- a/skimage/exposure/tests/test_unwrap.py
+++ b/skimage/exposure/tests/test_unwrap.py
@@ -1,5 +1,5 @@
 import numpy as np
-from numpy.testing import run_module_suite, TestCase, assert_array_almost_equal
+from numpy.testing import run_module_suite, assert_array_almost_equal
 
 from skimage.exposure import unwrap