diff --git a/git/repo/base.py b/git/repo/base.py
index efb70b37f..0a67a5c1f 100644
--- a/git/repo/base.py
+++ b/git/repo/base.py
@@ -1063,7 +1063,7 @@ def has_separate_working_tree(self):
     def __repr__(self):
         return '<git.Repo "%s">' % self.git_dir
 
-    def currentlyRebasingOn(self):
+    def currently_rebasing_on(self):
         """
         :return: The hash of the commit which is currently being replayed while rebasing.