diff --git a/app/reducers/deviceReducer.ts b/app/reducers/deviceReducer.ts
index a887e5a9..fe39fca0 100644
--- a/app/reducers/deviceReducer.ts
+++ b/app/reducers/deviceReducer.ts
@@ -27,7 +27,7 @@ export interface DeviceStateType {
 
 const initialState: DeviceStateType = {
   availableDevices: [],
-  connectedDevice: { name: 'disconnected', samplingRate: 0 },
+  connectedDevice: { name: 'disconnected', samplingRate: 0, channels: [] },
   connectionStatus: CONNECTION_STATUS.NOT_YET_CONNECTED,
   deviceAvailability: DEVICE_AVAILABILITY.NONE,
   rawObservable: null,