# Remarks in changes package with RevTex

I can't seem to make the remark option from the changes package in combination with RevTeX.

In this example, I can "add" text but I cannot add a remark without obtaining an error of type:

! Undefined control sequence.
<argument> \not \equal
ddd


Is there a workaround for this?

This is a MWE:

\documentclass[prb,11pt]{revtex4-1}

\usepackage{changes}

\begin{document}

\title{Title}
\author{Author}
\affiliation{Affiliation}

\begin{abstract}
Abstract
\end{abstract}

\maketitle

\section{Introduction}

\usepackage[footnote=true]{snotez}