diff --git a/Tools/autotest/autotest.py b/Tools/autotest/autotest.py
index 821c2c8cde..17cc5bf9b6 100755
--- a/Tools/autotest/autotest.py
+++ b/Tools/autotest/autotest.py
@@ -193,7 +193,7 @@ class TestResults(object):
     '''test results class'''
     def __init__(self):
         self.date = time.asctime()
-        self.githash = util.run_cmd('git rev-parse HEAD', output=True).strip()
+        self.githash = util.run_cmd('git rev-parse HEAD', output=True, dir=util.reltopdir('.')).strip()
         self.tests = []
         self.files = []