diff --git a/Tools/autotest/arducopter.py b/Tools/autotest/arducopter.py
index 08aa98bdd3..8d99b4a746 100644
--- a/Tools/autotest/arducopter.py
+++ b/Tools/autotest/arducopter.py
@@ -1106,7 +1106,6 @@ class AutoTestCopter(AutoTest):
 
     def autotest(self):
         """Autotest ArduCopter in SITL."""
-        self.frame = '+'
         if not self.hasInit:
             self.init()
 
diff --git a/Tools/autotest/quadplane.py b/Tools/autotest/quadplane.py
index cd63f18828..273a74b94c 100644
--- a/Tools/autotest/quadplane.py
+++ b/Tools/autotest/quadplane.py
@@ -148,7 +148,6 @@ class AutoTestQuadPlane(AutoTest):
 
     def autotest(self):
         """Autotest QuadPlane in SITL."""
-        self.frame = 'quadplane'
         if not self.hasInit:
             self.init()