diff --git a/core/services/ardupilot_manager/flight_controller_detector/linux/linux_boards.py b/core/services/ardupilot_manager/flight_controller_detector/linux/linux_boards.py
index bda807ede9..d7e54f6fc0 100644
--- a/core/services/ardupilot_manager/flight_controller_detector/linux/linux_boards.py
+++ b/core/services/ardupilot_manager/flight_controller_detector/linux/linux_boards.py
@@ -23,8 +23,8 @@ def get_serials(self) -> List[Serial]:
 
     def check_for_i2c_device(self, bus_number: int, address: int) -> bool:
         try:
-            bus = SMBus(bus_number)
-            bus.read_byte_data(address, 0)
+            with SMBus(bus_number) as bus:
+                bus.read_byte_data(address, 0)
             return True
         except OSError:
             return False