diff --git a/frigate/ptz/autotrack.py b/frigate/ptz/autotrack.py
index f38bf1f5f..f0d8419dd 100644
--- a/frigate/ptz/autotrack.py
+++ b/frigate/ptz/autotrack.py
@@ -31,7 +31,7 @@ from frigate.const import (
 )
 from frigate.ptz.onvif import OnvifController
 from frigate.track.tracked_object import TrackedObject
-from frigate.util.builtin import update_yaml_file
+from frigate.util.builtin import update_yaml_file_bulk
 from frigate.util.config import find_config_file
 from frigate.util.image import SharedMemoryFrameManager, intersection_over_union
 
@@ -348,10 +348,13 @@ class PtzAutoTracker:
             f"{camera}: Writing new config with autotracker motion coefficients: {self.config.cameras[camera].onvif.autotracking.movement_weights}"
         )
 
-        update_yaml_file(
+        update_yaml_file_bulk(
             config_file,
-            ["cameras", camera, "onvif", "autotracking", "movement_weights"],
-            self.config.cameras[camera].onvif.autotracking.movement_weights,
+            {
+                f"cameras.{camera}.onvif.autotracking.movement_weights": self.config.cameras[
+                    camera
+                ].onvif.autotracking.movement_weights
+            },
         )
 
     async def _calibrate_camera(self, camera):