Warning about "More than one Flow VaadinServlet was detected"

I keep getting the following warning. For now I can ignoring it, since it does not seem to be causing a problem, but was wondering if it is something I can/should fix?

WARN com.vaadin.mpr.core.MprServiceInitListener - More than one Flow VaadinServlet was detected. MPR will use 'com.vaadin.flow.server.VaadinServlet' as the default (ignoring 'com.vaadin.flow.server.VaadinServlet')

Thanks.