diff --git a/Tools/autotest/arducopter.py b/Tools/autotest/arducopter.py
index eb241490131b6..fb379a3be15a2 100644
--- a/Tools/autotest/arducopter.py
+++ b/Tools/autotest/arducopter.py
@@ -1728,6 +1728,7 @@ def MinAltFenceAvoid(self):
             "FENCE_ALT_MIN": 20,
             "FENCE_ACTION": 0,
         })
+        self.reboot_sitl()
 
         self.takeoff(30, mode="LOITER")
         """Hold loiter position."""