diff --git a/doc/examples/plot_entropy.py b/doc/examples/plot_entropy.py
index f5001e31..9f208c73 100644
--- a/doc/examples/plot_entropy.py
+++ b/doc/examples/plot_entropy.py
@@ -7,7 +7,6 @@ Image entropy is a quantity which is used to describe the amount of information
 coded in an image.
 
 """
-import numpy as np
 import matplotlib.pyplot as plt
 
 from skimage import data