diff --git a/skimage/segmentation/slic_superpixels.py b/skimage/segmentation/slic_superpixels.py
index a4e949fd..2caf8ade 100644
--- a/skimage/segmentation/slic_superpixels.py
+++ b/skimage/segmentation/slic_superpixels.py
@@ -1,3 +1,5 @@
+# coding=utf-8
+
 import collections as coll
 import numpy as np
 from scipy import ndimage