diff --git a/patterns.js b/patterns.js
index e56a3b785df29e726194f2b30e86bb19a78ef902..e1f6211b92cbb2bbbe2a3c317dd9e5f1f41ab8d1 100644
--- a/patterns.js
+++ b/patterns.js
@@ -28,7 +28,8 @@ module.exports = options => {
         {
           shift: 0,
           block: true,
-          info: utils.hasDelimiters('end', options)
+          info: utils.hasDelimiters('end', options),
+          markup: (str) => !/^[`~]{3,}$/.test(str)
         }
       ],
       transform: (tokens, i) => {