diff --git a/skimage/filter/tests/test_thresholding.py b/skimage/filter/tests/test_thresholding.py
index ec95e677..4f3daf42 100644
--- a/skimage/filter/tests/test_thresholding.py
+++ b/skimage/filter/tests/test_thresholding.py
@@ -37,6 +37,17 @@ class TestSimpleImage():
         assert_array_equal(ref, out)
 
     def test_threshold_adaptive_mean(self):
+        ref = np.array(
+            [[False, False, False, False,  True],
+             [False, False,  True, False,  True],
+             [False, False,  True,  True, False],
+             [False,  True,  True, False, False],
+             [ True,  True, False, False, False]]
+        )
+        out = threshold_adaptive(self.image, 3, 0, 'mean')
+        assert_array_equal(ref, out)
+
+    def test_threshold_adaptive_median(self):
         ref = np.array(
             [[False, False, False, False,  True],
              [False, False,  True, False, False],
@@ -44,7 +55,7 @@ class TestSimpleImage():
              [False, False,  True,  True, False],
              [False,  True, False, False, False]]
         )
-        out = threshold_adaptive(self.image, 3, 0, 'mean')
+        out = threshold_adaptive(self.image, 3, 0, 'median')
         assert_array_equal(ref, out)