diff --git a/Tools/autotest/arduplane.py b/Tools/autotest/arduplane.py
index 00ab7550de..2fc589e533 100644
--- a/Tools/autotest/arduplane.py
+++ b/Tools/autotest/arduplane.py
@@ -2717,6 +2717,7 @@ function'''
             "INS_GYR_CAL": 1,
         })
         self.reboot_sitl()
+        self.delay_sim_time(5)
         self.progress("Running accelcal")
         self.run_cmd(mavutil.mavlink.MAV_CMD_PREFLIGHT_CALIBRATION,
                      0, 0, 0, 0, 4, 0, 0,
diff --git a/Tools/autotest/common.py b/Tools/autotest/common.py
index c9871d1ce2..45ab7d594e 100644
--- a/Tools/autotest/common.py
+++ b/Tools/autotest/common.py
@@ -10866,6 +10866,7 @@ switch value'''
     def ahrstrim(self):
         self.start_subtest("Attitude Correctness")
         self.ahrstrim_attitude_correctness()
+        self.delay_sim_time(5)
         self.start_subtest("Preflight Calibration")
         self.ahrstrim_preflight_cal()