diff --git a/doc/source/comparison_with_r.rst b/doc/source/comparison_with_r.rst
index 0841f3354d160..db813e7cf55a1 100644
--- a/doc/source/comparison_with_r.rst
+++ b/doc/source/comparison_with_r.rst
@@ -295,7 +295,7 @@ In ``pandas`` the equivalent expression, using the
    })
 
    grouped = df.groupby(['month','week'])
-   print grouped['x'].agg([np.mean, np.std])
+   print(grouped['x'].agg([np.mean, np.std]))
 
 
 For more details and examples see :ref:`the groupby documentation
@@ -505,4 +505,4 @@ For more details and examples see :ref:`categorical introduction <categorical>`
 .. cast: http://www.inside-r.org/packages/cran/reshape2/docs/cast
 
 .. |factor| replace:: ``factor``
-.. _factor: https://stat.ethz.ch/R-manual/R-devel/library/base/html/factor.html
\ No newline at end of file
+.. _factor: https://stat.ethz.ch/R-manual/R-devel/library/base/html/factor.html