diff --git a/elasticsearch/client/cluster.py b/elasticsearch/client/cluster.py
index 3e8bcbb9..089d47b1 100644
--- a/elasticsearch/client/cluster.py
+++ b/elasticsearch/client/cluster.py
@@ -7,7 +7,7 @@ class ClusterClient(NamespacedClient):
def health(self, index=None, params=None):
"""
Get a very simple status on the health of the cluster.
- ``_
+ ``_
:arg index: Limit the information returned to a specific index
:arg level: Specify the level of detail for returned information, default u'cluster'