diff --git a/python/lsst/ts/externalscripts/auxtel/latiss_take_twilight_flats.py b/python/lsst/ts/externalscripts/auxtel/latiss_take_twilight_flats.py
index 8397a1865..c24af8434 100644
--- a/python/lsst/ts/externalscripts/auxtel/latiss_take_twilight_flats.py
+++ b/python/lsst/ts/externalscripts/auxtel/latiss_take_twilight_flats.py
@@ -80,10 +80,6 @@ async def configure_camera(self) -> None:
                 tcs_ready_to_take_data=self.atcs.ready_to_take_data,
             )
             await self.latiss.start_task
-            await self.latiss.setup_instrument(
-                filter=self.config.filter,
-                grating=self.config.grating,
-            )
         else:
             self.log.debug("Camera already defined, skipping.")