diff --git a/lib/node_modules/@stdlib/_tools/remark/plugins/remark-img-equations/lib/insert_equations.js b/lib/node_modules/@stdlib/_tools/remark/plugins/remark-img-equations/lib/insert_equations.js
index 09893893542c..234fa1590625 100644
--- a/lib/node_modules/@stdlib/_tools/remark/plugins/remark-img-equations/lib/insert_equations.js
+++ b/lib/node_modules/@stdlib/_tools/remark/plugins/remark-img-equations/lib/insert_equations.js
@@ -46,6 +46,7 @@ var RAW = /raw="([^"]*)"/;
 * @returns {string} substituted equation
 */
 function substitute( tex ) {
+	tex = replace( tex, /%/g, '\\%' );
 	return replace( tex, /\\operatorname{([^}]*)}/g, '\\mathop{\\mathrm{$1}}' );
 }