diff --git a/doc/pyplots/pyplot_three.py b/doc/pyplots/pyplot_three.py
index ecb200e6b413..2762d7cbd1d7 100644
--- a/doc/pyplots/pyplot_three.py
+++ b/doc/pyplots/pyplot_three.py
@@ -6,4 +6,4 @@
 
 # red dashes, blue squares and green triangles
 plt.plot(t, t, 'r--', t, t**2, 'bs', t, t**3, 'g^')
-
+plt.show()