diff --git a/src/controller/python/chip/ChipDeviceCtrl.py b/src/controller/python/chip/ChipDeviceCtrl.py
index 112fae16946157..a3a9b3040223be 100644
--- a/src/controller/python/chip/ChipDeviceCtrl.py
+++ b/src/controller/python/chip/ChipDeviceCtrl.py
@@ -533,7 +533,7 @@ def IsConnected(self):
                 self.devCtrl)
         )
 
-    def ConnectBLE(self, discriminator: int, setupPinCode:int , nodeid:int, isShortDiscriminator: bool = False) -> PyChipError:
+    def ConnectBLE(self, discriminator: int, setupPinCode: int, nodeid: int, isShortDiscriminator: bool = False) -> PyChipError:
         self.CheckIsActive()
 
         self._commissioning_complete_future = concurrent.futures.Future()