Stray end Tag a

Hi, iam getting invalide Code on my Site using the menu.
This is how my Code looks like:

<div id="responsive-menu" >
        <div id="responsive-menu-title">
                    <a href="http://www.mywebsite.abc" target="_self">
                <img src="http://www.mywebsite.abcsm1.gif"
                     class="RMImage"
                     alt=""
                     title="" />

                    </a>

                </a>
        </div>

There is a spare closing a – Tag
When removing the “Menu Image” the code looks fine.
Any Ideas? Tanks

https://wordpress.org/plugins/responsive-menu/