diff --git a/boltons/iterutils.py b/boltons/iterutils.py
index 1ca729c6..b7a00ce3 100644
--- a/boltons/iterutils.py
+++ b/boltons/iterutils.py
@@ -523,7 +523,7 @@ def one(src, default=None, key=None):
     the given iterable *src* that evaluates to ``True``, as determined
     by callable *key*. If unset, *key* defaults to :class:`bool`. If
     no such objects are found, *default* is returned. If *default* is
-    not passed, ``None` is returned.
+    not passed, ``None`` is returned.
 
     If *src* has more than one object that evaluates to ``True``, or
     if there is no object that fulfills such condition, return