diff --git a/doc/source/visualization.rst b/doc/source/visualization.rst
index 569a6fb7b7a0d..dd8ccfcfd28ac 100644
--- a/doc/source/visualization.rst
+++ b/doc/source/visualization.rst
@@ -1405,7 +1405,7 @@ Here is an example of one way to easily plot group means with standard deviation
    # Plot
    fig, ax = plt.subplots()
    @savefig errorbar_example.png
-   means.plot.bar(yerr=errors, ax=ax)
+   means.plot.bar(yerr=errors, ax=ax, capsize=4)
 
 .. ipython:: python
    :suppress: