diff --git a/python/lsst/ts/observatory/control/maintel/mtcs.py b/python/lsst/ts/observatory/control/maintel/mtcs.py
index 5ddb34ed..5c80b84d 100644
--- a/python/lsst/ts/observatory/control/maintel/mtcs.py
+++ b/python/lsst/ts/observatory/control/maintel/mtcs.py
@@ -2628,7 +2628,6 @@ async def close_m1m3_booster_valve(self) -> None:
         """Close M1M3 booster valves."""
         if self.check.mtm1m3:
             await self._handle_m1m3_booster_valve(open=False)
-            await asyncio.sleep(self.fast_timeout)
 
     async def _handle_m1m3_booster_valve(self, open: bool) -> None:
         """Handle opening the M1M3 booster valves"""