diff --git a/js/dompurify.js b/js/dompurify.js
new file mode 100644
index 0000000..1bffa24
--- /dev/null
+++ b/js/dompurify.js
@@ -0,0 +1,3 @@
+/*! @license DOMPurify | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/2.2.2/LICENSE */
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+//# sourceMappingURL=purify.min.js.map
diff --git a/js/mde-wrapper.js b/js/mde-wrapper.js
index 22201f9..c7cc24d 100644
--- a/js/mde-wrapper.js
+++ b/js/mde-wrapper.js
@@ -3,7 +3,7 @@ function myPreviewRender (text) {
         return '&#'+i.charCodeAt(0)+';';
     });
     text = SimpleMDE.prototype.markdown(text);
-    text = text.replace(/ /g, '&nbsp;');
+    text = DOMPurify.sanitize(text);
 
     return text;
 };
diff --git a/tpl/create_poll.tpl b/tpl/create_poll.tpl
index 774d2d9..91cbb1c 100644
--- a/tpl/create_poll.tpl
+++ b/tpl/create_poll.tpl
@@ -2,6 +2,7 @@
 
 {block name="header"}
     <script src="{"js/simplemde.min.js"|resource}" type="text/javascript"></script>
+    <script src="{"js/dompurify.js"|resource}" type="text/javascript"></script>
     <script src="{"js/mde-wrapper.js"|resource}" type="text/javascript"></script>
     <script src="{"js/app/create_poll.js"|resource}" type="text/javascript"></script>
     <link rel="stylesheet" href="{"css/app/create_poll.css"|resource}">
diff --git a/tpl/studs.tpl b/tpl/studs.tpl
index 202fbac..4c78740 100644
--- a/tpl/studs.tpl
+++ b/tpl/studs.tpl
@@ -8,6 +8,7 @@
 
     {if $admin}
         <script src="{"js/simplemde.min.js"|resource}" type="text/javascript"></script>
+        <script src="{"js/dompurify.js"|resource}" type="text/javascript"></script>
         <script src="{"js/mde-wrapper.js"|resource}" type="text/javascript"></script>
         <script src="{"js/app/adminstuds.js"|resource}" type="text/javascript"></script>
         <link rel="stylesheet" href="{'css/simplemde.min.css'|resource}">