diff --git a/src/dom-to-image-more.js b/src/dom-to-image-more.js
index 33800796..2f60755f 100644
--- a/src/dom-to-image-more.js
+++ b/src/dom-to-image-more.js
@@ -950,7 +950,7 @@
         }
 
         function escapeRegEx(string) {
-            return string.replace(/([.*+?^${}()|[]\/\\])/g, '\\$1');
+            return string.replace(/([.*+?^${}()|[\]\/\\])/g, '\\$1');
         }
 
         function delay(ms) {