diff --git a/src/main/res/drawable/background_selectable.xml b/src/main/res/drawable/background_selectable.xml
index 1d2a6c4b..9642cabe 100644
--- a/src/main/res/drawable/background_selectable.xml
+++ b/src/main/res/drawable/background_selectable.xml
@@ -3,11 +3,13 @@
     <item>
         <shape android:shape="rectangle">
             <solid android:color="@color/material_blue_grey_300" />
+            <corners android:radius="4dp"/>
         </shape>
     </item>
     <item android:left="8dp">
         <shape android:shape="rectangle">
             <solid android:color="@android:color/white" />
+            <corners android:bottomRightRadius="4dp" android:topRightRadius="4dp"/>
         </shape>
     </item>
 </layer-list>
diff --git a/src/main/res/drawable/background_selected.xml b/src/main/res/drawable/background_selected.xml
index 01e1208e..9d545ede 100644
--- a/src/main/res/drawable/background_selected.xml
+++ b/src/main/res/drawable/background_selected.xml
@@ -3,11 +3,13 @@
     <item>
         <shape android:shape="rectangle">
             <solid android:color="@color/material_green_700" />
+            <corners android:radius="4dp"/>
         </shape>
     </item>
     <item android:left="8dp">
         <shape android:shape="rectangle">
             <solid android:color="@android:color/white" />
+            <corners android:bottomRightRadius="4dp" android:topRightRadius="4dp"/>
         </shape>
     </item>
 </layer-list>
diff --git a/src/main/res/layout/layout_profiles_item.xml b/src/main/res/layout/layout_profiles_item.xml
index 88d488f5..3b5e2a27 100644
--- a/src/main/res/layout/layout_profiles_item.xml
+++ b/src/main/res/layout/layout_profiles_item.xml
@@ -1,15 +1,14 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!-- Based on: https://github.com/android/platform_frameworks_base/blob/505e3ab/core/res/res/layout/simple_list_item_2.xml -->
 <android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    xmlns:ads="http://schemas.android.com/apk/res-auto"
-    android:layout_width="match_parent"
-    android:layout_height="wrap_content"
-    android:background="@drawable/background_selectable"
-    android:layout_marginTop="8dp"
-    android:layout_marginStart="8dp"
-    android:layout_marginEnd="8dp"
-    android:id="@+id/indicator" >
+                                    xmlns:app="http://schemas.android.com/apk/res-auto"
+                                    android:layout_width="match_parent"
+                                    android:layout_height="wrap_content"
+                                    android:background="@drawable/background_selectable"
+                                    android:layout_marginTop="8dp"
+                                    android:layout_marginStart="8dp"
+                                    android:layout_marginEnd="8dp"
+                                    android:id="@+id/indicator">
     <LinearLayout android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:orientation="vertical"
@@ -51,8 +50,8 @@
             <TextView android:id="@+id/address"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
-                android:layout_gravity="center_vertical|left"
-                android:gravity="center_vertical|left"
+                android:layout_gravity="center_vertical|start"
+                android:gravity="center_vertical|start"
                 android:layout_weight="1"
                 android:maxLines="1"
                 android:ellipsize="end"
@@ -61,8 +60,8 @@
             <TextView android:id="@+id/traffic"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
-                android:layout_gravity="center_vertical|right"
-                android:gravity="center_vertical|right"
+                android:layout_gravity="center_vertical|end"
+                android:gravity="center_vertical|end"
                 android:layout_weight="1"
                 android:maxLines="1"
                 android:ellipsize="end"
@@ -75,10 +74,9 @@
             android:layout_marginTop="8dp"
             android:layout_width="fill_parent"
             android:layout_height="wrap_content"
-            android:layout_centerHorizontal="true"
-            android:layout_alignParentBottom="true"
+            android:layout_gravity="center_horizontal"
             android:visibility="gone"
-            ads:adSize="320x132"
-            ads:adUnitId="ca-app-pub-9097031975646651/5224027521" />
+            app:adSize="320x132"
+            app:adUnitId="ca-app-pub-9097031975646651/5224027521" />
     </LinearLayout>
 </android.support.v7.widget.CardView>
diff --git a/src/main/scala/com/github/shadowsocks/GlobalConfigFragment.scala b/src/main/scala/com/github/shadowsocks/GlobalConfigFragment.scala
index 9654989a..6cd64e1c 100644
--- a/src/main/scala/com/github/shadowsocks/GlobalConfigFragment.scala
+++ b/src/main/scala/com/github/shadowsocks/GlobalConfigFragment.scala
@@ -66,5 +66,4 @@ class GlobalConfigFragment extends PreferenceFragment {
       progressDialog = null
     }
   }
-
 }
diff --git a/src/main/scala/com/github/shadowsocks/MainActivity.scala b/src/main/scala/com/github/shadowsocks/MainActivity.scala
index c3ee042a..640aa9f2 100644
--- a/src/main/scala/com/github/shadowsocks/MainActivity.scala
+++ b/src/main/scala/com/github/shadowsocks/MainActivity.scala
@@ -365,10 +365,8 @@ class MainActivity extends Activity with ServiceBoundContext with Drawer.OnDrawe
 
   private def displayFragment(fragment: ToolbarFragment) {
     val transaction = getFragmentManager.beginTransaction().replace(R.id.content, fragment)
-    if (fragment != profilesFragment)
-      transaction.addToBackStack(null).commitAllowingStateLoss()
-    else
-      transaction.commitAllowingStateLoss()
+    if (fragment != profilesFragment) transaction.addToBackStack(null)
+    transaction.commitAllowingStateLoss()
     drawer.closeDrawer()
   }