diff --git a/doc/source/user_guide/dsintro.rst b/doc/source/user_guide/dsintro.rst
index 66d705aada3f5..b9c285ca30c96 100644
--- a/doc/source/user_guide/dsintro.rst
+++ b/doc/source/user_guide/dsintro.rst
@@ -89,7 +89,7 @@ index will be pulled out.
 
 If ``data`` is a scalar value, the value will be repeated to match
 the length of **index**.  If the **index** is not provided, it defaults
-to ``RangeIndex (1)``.
+to ``RangeIndex(1)``.
 
 .. ipython:: python