diff --git a/klaus/repo.py b/klaus/repo.py
index 891c91e3..01c29378 100644
--- a/klaus/repo.py
+++ b/klaus/repo.py
@@ -112,7 +112,7 @@ def history(self, commit, path=None, max_commits=None, skip=0):
 
     def blame(self, commit, path):
         """"""
-        cmd = ['git', 'blame', '-ls', commit.id, '--', path]
+        cmd = ['git', 'blame', '-ls', '--root', commit.id, '--', path]
         sha1_sums = check_output(cmd, cwd=os.path.abspath(self.path))
         for line in sha1_sums.split("\n"):
             if line: