diff --git a/skimage/io/tests/test_plugin.py b/skimage/io/tests/test_plugin.py
index 82d8e662..30a44414 100644
--- a/skimage/io/tests/test_plugin.py
+++ b/skimage/io/tests/test_plugin.py
@@ -1,4 +1,4 @@
-from numpy.testing import *
+from numpy.testing import assert_equal, raises
 
 from skimage import io
 from skimage.io._plugins import plugin