diff --git a/Tools/autotest/common.py b/Tools/autotest/common.py
index 21fd5148ee..b855490787 100644
--- a/Tools/autotest/common.py
+++ b/Tools/autotest/common.py
@@ -8450,11 +8450,11 @@ Also, ignores heartbeats not from our target system'''
         start_loc = self.sitl_start_location()
         self.progress("SITL start loc: %s" % str(start_loc))
         delta = abs(orig_home.latitude * 1.0e-7 - start_loc.lat)
-        if delta > 0.000001:
+        if delta > 0.000002:
             raise ValueError("homes differ in lat got=%f vs want=%f delta=%f" %
                              (orig_home.latitude * 1.0e-7, start_loc.lat, delta))
         delta = abs(orig_home.longitude * 1.0e-7 - start_loc.lng)
-        if delta > 0.000001:
+        if delta > 0.000002:
             raise ValueError("homes differ in lon  got=%f vs want=%f delta=%f" %
                              (orig_home.longitude * 1.0e-7, start_loc.lng, delta))
         if self.is_rover():