diff --git a/doc/release/contribs.py b/doc/release/contribs.py
index c92ac7ca..58cb11d2 100755
--- a/doc/release/contribs.py
+++ b/doc/release/contribs.py
@@ -11,7 +11,6 @@ if len(sys.argv) != 2:
 tag = sys.argv[1]
 
 def call(cmd):
-    print(shlex.split(cmd))
     return subprocess.check_output(shlex.split(cmd), universal_newlines=True).split('\n')
 
 tag_date = call("git show --format='%%ci' %s" % tag)[0]
diff --git a/skimage/feature/util.py b/skimage/feature/util.py
index 8ee2baf8..5a3e5687 100644
--- a/skimage/feature/util.py
+++ b/skimage/feature/util.py
@@ -105,7 +105,7 @@ def plot_matches(ax, image1, image2, keypoints1, keypoints2, matches,
         ax.scatter(keypoints2[:, 1] + offset[1], keypoints2[:, 0],
                    facecolors='none', edgecolors=keypoints_color)
 
-    ax.imshow(image)
+    ax.imshow(image, interpolation='nearest', cmap='gray')
     ax.axis((0, 2 * offset[1], offset[0], 0))
 
     for i in range(matches.shape[0]):