diff --git a/browser/components/MarkdownPreview.js b/browser/components/MarkdownPreview.js
index bb663c5e3..e9f3fbb21 100755
--- a/browser/components/MarkdownPreview.js
+++ b/browser/components/MarkdownPreview.js
@@ -152,6 +152,10 @@ body p {
   .clipboardButton {
     display: none
   }
+
+  pre.code.CodeMirror {
+    white-space: pre-wrap;
+  }
 }
 
 ${allowCustomCSS ? customCSS : ''}