diff --git a/src/utils.js b/src/utils.js
index fcc907571..fcd682581 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -1,4 +1,4 @@
-export const EQUATION_REGEXP = /^\\(\[|\().*?\\(\]|\))$/;
+export const EQUATION_REGEXP = /^(\\\[.*?\\\]|\\\(.*?\\\))$/;
 
 export const defaultConfig = {
 	engine: 'mathjax',