Hide shadow of rating bar

Customizing RatingBar shows me shadow

How to hide this shadow ?

enter image description here

           <RatingBar
            android:id="@+id/ratingBarMain"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_below="@+id/textView6"
            android:layout_toRightOf="@+id/imgThumbFix"
            android:clickable="false"
            android:progressDrawable="@drawable/ratingbar_red_small"
            android:stepSize="1" />

Solution

set

android:layout_height="EQUAL_TO_IMAGE_HEIGHT"

example

android:layout_height="35dp"