diff --git a/app/build.gradle b/app/build.gradle
index adfc20a..a42d53a 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -13,7 +13,7 @@ android {
         minSdkVersion 21
         targetSdkVersion 29
         versionCode 1
-        versionName '1.3.0'
+        versionName '1.3.1'
 
         buildConfigField 'String', 'API_IMPL', "\"\""
     }
diff --git a/app/src/main/java/com/smlnskgmail/jaman/remotetemperaturecontrol/MainActivity.kt b/app/src/main/java/com/smlnskgmail/jaman/remotetemperaturecontrol/MainActivity.kt
index 03e2e04..fd975b4 100644
--- a/app/src/main/java/com/smlnskgmail/jaman/remotetemperaturecontrol/MainActivity.kt
+++ b/app/src/main/java/com/smlnskgmail/jaman/remotetemperaturecontrol/MainActivity.kt
@@ -26,7 +26,9 @@ class MainActivity : AppCompatActivity() {
     }
 
     private fun handleOnPause() {
-        val currentFragment = supportFragmentManager.findFragmentByTag(CURRENT_FRAGMENT_TAG)
+        val currentFragment = supportFragmentManager.findFragmentByTag(
+            CURRENT_FRAGMENT_TAG
+        )
         if (currentFragment != null && currentFragment is BtPauseTarget) {
             currentFragment.btOnPause()
         }
diff --git a/app/src/main/java/com/smlnskgmail/jaman/remotetemperaturecontrol/logic/deviceselector/BtDevicesBottomSheet.kt b/app/src/main/java/com/smlnskgmail/jaman/remotetemperaturecontrol/logic/deviceselector/BtDevicesBottomSheet.kt
index 81bd2f9..be0428c 100644
--- a/app/src/main/java/com/smlnskgmail/jaman/remotetemperaturecontrol/logic/deviceselector/BtDevicesBottomSheet.kt
+++ b/app/src/main/java/com/smlnskgmail/jaman/remotetemperaturecontrol/logic/deviceselector/BtDevicesBottomSheet.kt
@@ -32,7 +32,9 @@ class BtDevicesBottomSheet : BaseBottomSheet() {
         this.btDevices.addAll(btDevices)
     }
 
-    fun setBtDeviceSelectCallback(btConnectTarget: BtConnectTarget) {
+    fun setBtDeviceSelectCallback(
+        btConnectTarget: BtConnectTarget
+    ) {
         this.btConnectTarget = btConnectTarget
     }
 
diff --git a/app/src/main/java/com/smlnskgmail/jaman/remotetemperaturecontrol/logic/deviceselector/recycler/BtDevicesAdapter.kt b/app/src/main/java/com/smlnskgmail/jaman/remotetemperaturecontrol/logic/deviceselector/recycler/BtDevicesAdapter.kt
index 2078023..281e6f0 100644
--- a/app/src/main/java/com/smlnskgmail/jaman/remotetemperaturecontrol/logic/deviceselector/recycler/BtDevicesAdapter.kt
+++ b/app/src/main/java/com/smlnskgmail/jaman/remotetemperaturecontrol/logic/deviceselector/recycler/BtDevicesAdapter.kt
@@ -13,7 +13,10 @@ class BtDevicesAdapter(
     private var selectedDeviceMacAddress: String = ""
     private var selectedDeviceName: String = ""
 
-    override fun onBindViewHolder(holderBt: BtDeviceHolder, position: Int) {
+    override fun onBindViewHolder(
+        holderBt: BtDeviceHolder,
+        position: Int
+    ) {
         holderBt.bind(btDevices[position])
     }
 
@@ -32,8 +35,10 @@ class BtDevicesAdapter(
 
     fun getSelectedDeviceMacAddress() = selectedDeviceMacAddress
 
-    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int) =
-        BtDeviceHolder(
+    override fun onCreateViewHolder(
+        parent: ViewGroup,
+        viewType: Int
+    ) = BtDeviceHolder(
             LayoutInflater.from(parent.context)
                 .inflate(R.layout.item_bt_device, parent, false),
             this
diff --git a/app/src/main/java/com/smlnskgmail/jaman/remotetemperaturecontrol/logic/monitor/MonitorFragment.kt b/app/src/main/java/com/smlnskgmail/jaman/remotetemperaturecontrol/logic/monitor/MonitorFragment.kt
index 61e66f5..50b2282 100644
--- a/app/src/main/java/com/smlnskgmail/jaman/remotetemperaturecontrol/logic/monitor/MonitorFragment.kt
+++ b/app/src/main/java/com/smlnskgmail/jaman/remotetemperaturecontrol/logic/monitor/MonitorFragment.kt
@@ -26,7 +26,7 @@ import com.smlnskgmail.jaman.remotetemperaturecontrol.logic.settings.SettingsBot
 import kotlinx.android.synthetic.main.fragment_monitor.*
 
 @SuppressWarnings("TooManyFunctions")
-class MonitorFragment : BaseFragment(), BtMonitorTarget {
+class MonitorFragment : BaseFragment(), BtMonitorTarget, BtDisconnectTarget {
 
     private var monitorBtConnection: BtConnection? = null
     private var btAdapter: BluetoothAdapter? = null
@@ -201,14 +201,12 @@ class MonitorFragment : BaseFragment(), BtMonitorTarget {
 
     private fun showSettings() {
         val settingsBottomSheet = SettingsBottomSheet()
-        settingsBottomSheet.setBtDisconnectListener(object : BtDisconnectTarget {
-            override fun btDisconnect() {
-                monitorBtConnection!!.disconnect()
-                resetRequired()
-            }
-        })
         showBottomSheet(settingsBottomSheet)
     }
+    override fun btDisconnect() {
+        monitorBtConnection!!.disconnect()
+        resetRequired()
+    }
 
     override fun btOnPause() {
         monitorBtConnection!!.handleOnResume()
diff --git a/app/src/main/java/com/smlnskgmail/jaman/remotetemperaturecontrol/logic/monitor/impl/debugbt/DebugBtConnection.kt b/app/src/main/java/com/smlnskgmail/jaman/remotetemperaturecontrol/logic/monitor/impl/debugbt/DebugBtConnection.kt
index 683d986..21e75e3 100644
--- a/app/src/main/java/com/smlnskgmail/jaman/remotetemperaturecontrol/logic/monitor/impl/debugbt/DebugBtConnection.kt
+++ b/app/src/main/java/com/smlnskgmail/jaman/remotetemperaturecontrol/logic/monitor/impl/debugbt/DebugBtConnection.kt
@@ -99,7 +99,9 @@ class DebugBtConnection(
         )
     }
 
-    override fun send(btMonitorSignalType: BtMonitorSignalType) {
+    override fun send(
+        btMonitorSignalType: BtMonitorSignalType
+    ) {
         writeLog(
             "Debug Monitor: send(${btMonitorSignalType})"
         )
diff --git a/app/src/main/java/com/smlnskgmail/jaman/remotetemperaturecontrol/logic/settings/SettingsBottomSheet.kt b/app/src/main/java/com/smlnskgmail/jaman/remotetemperaturecontrol/logic/settings/SettingsBottomSheet.kt
index 8c3f90c..b669c5e 100644
--- a/app/src/main/java/com/smlnskgmail/jaman/remotetemperaturecontrol/logic/settings/SettingsBottomSheet.kt
+++ b/app/src/main/java/com/smlnskgmail/jaman/remotetemperaturecontrol/logic/settings/SettingsBottomSheet.kt
@@ -7,12 +7,10 @@ import kotlinx.android.synthetic.main.bottom_sheet_settings.*
 
 class SettingsBottomSheet : BaseBottomSheet() {
 
-    private var disconnectTarget: BtDisconnectTarget? = null
-
     override fun initialize() {
         settings_disconnect.setOnClickListener {
             actionAndDismiss {
-                disconnectTarget?.btDisconnect()
+                (activity as BtDisconnectTarget).btDisconnect()
             }
         }
     }
@@ -22,10 +20,6 @@ class SettingsBottomSheet : BaseBottomSheet() {
         action()
     }
 
-    fun setBtDisconnectListener(disconnectTarget: BtDisconnectTarget) {
-        this.disconnectTarget = disconnectTarget
-    }
-
     override fun getLayoutResId() = R.layout.bottom_sheet_settings
 
 }