diff --git a/Tools/autotest/arducopter.py b/Tools/autotest/arducopter.py
index 6a8bb3874a..eb90b2ae44 100644
--- a/Tools/autotest/arducopter.py
+++ b/Tools/autotest/arducopter.py
@@ -2018,6 +2018,7 @@ class AutoTestCopter(AutoTest):
         rlld = self.get_parameter("ATC_RAT_RLL_D")
         rlli = self.get_parameter("ATC_RAT_RLL_I")
         rllp = self.get_parameter("ATC_RAT_RLL_P")
+        self.set_parameter("ATC_RAT_RLL_SMAX", 1)
         self.takeoff(10)
 
         # hold position in loiter