Unexplainable margin

I have a listview but on the last item I have an unexplainable margin that I can't get rid of

Xaml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:minWidth="25px"
    android:minHeight="25px">
    <LinearLayout
        android:orientation="horizontal"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/linearLayout1"
        android:layout_margin="5dp"
        android:weightSum="100">
        <ImageView
            android:src="@android:drawable/ic_menu_gallery"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:id="@+id/newsThumbnail"
            android:layout_margin="0dp"
            android:layout_weight="25" />
        <LinearLayout
            android:orientation="vertical"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:id="@+id/linearLayout2"
            android:layout_marginLeft="5dp"
            android:layout_weight="75">
            <TextView
                android:text="Title"
                android:textAppearance="?android:attr/textAppearanceMedium"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:id="@+id/newsTitle" />
            <TextView
                android:text="Description"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:id="@+id/newsDesc" />
        </LinearLayout>
    </LinearLayout>
</LinearLayout>