How to remove padding around Android CheckBox

I need to put check to the right hand top corner of my imageview. But when I do this I noticed a default margin around my checkbox. Is there a way to remove this?? ``` <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" > <FrameLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerInParent="true" > <ImageView android:id="@+id/thumbImage" android:layout_width="100dp" android:layout_height="132dp" android:layout_gravity="center" /> </FrameLayout> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentRight="true" android:layout_alignParentTop="true" android:background="#ff0000" android:gravity="center" > <CheckBox android:id="@+id/itemCheckBox" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentEnd="true" android:layout_gravity="center" android:button="@drawable/checkbox_background" android:paddingLeft="0dp" android:paddingTop="0dp" /> </LinearLayout> </RelativeLayout> ```