diff --git a/gittle/gittle.py b/gittle/gittle.py
index 42f4b58..6f75912 100644
--- a/gittle/gittle.py
+++ b/gittle/gittle.py
@@ -735,7 +735,7 @@ def checkout_all(self, commit_sha=None):
         return self._checkout_tree(commit_tree)
 
     def checkout(self, ref):
-        """Checkout a given ref or SHA
+        """Checkout a given ref
         """
         self.repo.refs.set_symbolic_ref('HEAD', ref)
         commit_tree = self._commit_tree(ref)