diff --git a/judge/management/commands/render_pdf.py b/judge/management/commands/render_pdf.py
index f8b2966..238000f 100644
--- a/judge/management/commands/render_pdf.py
+++ b/judge/management/commands/render_pdf.py
@@ -96,7 +96,7 @@ class Command(BaseCommand):
                 .replace("'//", "'https://")
             )
             maker.title = problem_name
-            for file in ("style.css", "pygment-github.css", "mathjax_config.js"):
+            for file in ("style.css", "pygment-github.css", "mathjax3_config.js"):
                 maker.load(file, os.path.join(settings.DMOJ_RESOURCES, file))
             maker.make(debug=True)
             if not maker.success:
diff --git a/judge/views/problem.py b/judge/views/problem.py
index 9f74b82..4810869 100644
--- a/judge/views/problem.py
+++ b/judge/views/problem.py
@@ -394,7 +394,7 @@ class ProblemPdfView(ProblemMixin, SingleObjectMixin, View):
                 maker.title = problem_name
                 assets = ["style.css", "pygment-github.css"]
                 if maker.math_engine == "jax":
-                    assets.append("mathjax_config.js")
+                    assets.append("mathjax3_config.js")
                 for file in assets:
                     maker.load(file, os.path.join(settings.DMOJ_RESOURCES, file))
                 maker.make()
diff --git a/judge/widgets/pagedown.py b/judge/widgets/pagedown.py
index 0c0ef48..f9d3636 100644
--- a/judge/widgets/pagedown.py
+++ b/judge/widgets/pagedown.py
@@ -59,7 +59,7 @@ else:
     class MathJaxPagedownWidget(PagedownWidget):
         class Media:
             js = [
-                "mathjax_config.js",
+                "mathjax3_config.js",
                 "https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-chtml.js",
                 "pagedown_math.js",
             ]
diff --git a/resources/mathjax_config.js b/resources/mathjax3_config.js
similarity index 100%
rename from resources/mathjax_config.js
rename to resources/mathjax3_config.js
diff --git a/templates/chat/chat.html b/templates/chat/chat.html
index 87a6077..e11af87 100644
--- a/templates/chat/chat.html
+++ b/templates/chat/chat.html
@@ -4,7 +4,7 @@
 {% block title %} {{_('Chat Box')}} {% endblock %}
 {% block js_media %}
 
-<script type="text/javascript" src="{{ static('mathjax_config.js') }}"></script>
+<script type="text/javascript" src="{{ static('mathjax3_config.js') }}"></script>
 <script type="text/javascript" src="{{ static('event.js') }}"></script>
 <script src="https://unpkg.com/@popperjs/core@2"></script>
 <script type="module" src="https://unpkg.com/emoji-picker-element@1"></script>
diff --git a/templates/comments/media-js.html b/templates/comments/media-js.html
index 3e0f56f..b876dd7 100644
--- a/templates/comments/media-js.html
+++ b/templates/comments/media-js.html
@@ -8,7 +8,7 @@
                     if (!("MathJax" in window)) {
                         $.ajax({
                             type: "GET",
-                            url: '{{ static('mathjax_config.js') }}',
+                            url: '{{ static('mathjax3_config.js') }}',
                             dataType: "script",
                             cache: true,
                             success: function () {
diff --git a/templates/comments/preview.html b/templates/comments/preview.html
index 65935f9..82e7cb1 100644
--- a/templates/comments/preview.html
+++ b/templates/comments/preview.html
@@ -1,4 +1,4 @@
 {{ preview_data|markdown|reference|str|safe }}
 {% if REQUIRE_JAX %}
-    <div data-config="{{ static('mathjax_config.js') }}" class="require-mathjax-support"></div>
+    <div data-config="{{ static('mathjax3_config.js') }}" class="require-mathjax-support"></div>
 {% endif %}
\ No newline at end of file
diff --git a/templates/common-content.html b/templates/common-content.html
index 861edaf..52f195b 100644
--- a/templates/common-content.html
+++ b/templates/common-content.html
@@ -76,31 +76,5 @@
 {% block bodyend %}
     {% if REQUIRE_JAX %}
         {% include "mathjax-load.html" %}
-        <script>
-            // TODO: remove this
-            window.MathJax = {
-              options: {
-                ignoreHtmlClass: 'tex2jax_ignore',
-                processHtmlClass: 'tex2jax_process',
-                renderActions: {
-                  find: [10, function (doc) {
-                    for (const node of document.querySelectorAll('script[type^="math/tex"]')) {
-                      const display = !!node.type.match(/; *mode=display/);
-                      const math = new doc.options.MathItem(node.textContent, doc.inputJax[0], display);
-                      const text = document.createTextNode('');
-                      const sibling = node.previousElementSibling;
-                      node.parentNode.replaceChild(text, node);
-                      math.start = {node: text, delim: '', n: 0};
-                      math.end = {node: text, delim: '', n: 0};
-                      doc.math.push(math);
-                      if (sibling && sibling.matches('.MathJax_Preview')) {
-                        sibling.parentNode.removeChild(sibling);
-                      }
-                    }
-                  }, '']
-                }
-              }
-            };
-        </script>
     {% endif %}
 {% endblock %}
diff --git a/templates/contest/preview.html b/templates/contest/preview.html
index 65935f9..82e7cb1 100644
--- a/templates/contest/preview.html
+++ b/templates/contest/preview.html
@@ -1,4 +1,4 @@
 {{ preview_data|markdown|reference|str|safe }}
 {% if REQUIRE_JAX %}
-    <div data-config="{{ static('mathjax_config.js') }}" class="require-mathjax-support"></div>
+    <div data-config="{{ static('mathjax3_config.js') }}" class="require-mathjax-support"></div>
 {% endif %}
\ No newline at end of file
diff --git a/templates/mathjax-load.html b/templates/mathjax-load.html
index 27878dc..487459e 100644
--- a/templates/mathjax-load.html
+++ b/templates/mathjax-load.html
@@ -1,2 +1,2 @@
-<script type="text/javascript" src="{{ static('mathjax_config.js') }}"></script>
+<script type="text/javascript" src="{{ static('mathjax3_config.js') }}"></script>
 <script src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-chtml.js"></script>
diff --git a/templates/organization/preview.html b/templates/organization/preview.html
index 65935f9..82e7cb1 100644
--- a/templates/organization/preview.html
+++ b/templates/organization/preview.html
@@ -1,4 +1,4 @@
 {{ preview_data|markdown|reference|str|safe }}
 {% if REQUIRE_JAX %}
-    <div data-config="{{ static('mathjax_config.js') }}" class="require-mathjax-support"></div>
+    <div data-config="{{ static('mathjax3_config.js') }}" class="require-mathjax-support"></div>
 {% endif %}
\ No newline at end of file
diff --git a/templates/problem/preview.html b/templates/problem/preview.html
index 65935f9..82e7cb1 100644
--- a/templates/problem/preview.html
+++ b/templates/problem/preview.html
@@ -1,4 +1,4 @@
 {{ preview_data|markdown|reference|str|safe }}
 {% if REQUIRE_JAX %}
-    <div data-config="{{ static('mathjax_config.js') }}" class="require-mathjax-support"></div>
+    <div data-config="{{ static('mathjax3_config.js') }}" class="require-mathjax-support"></div>
 {% endif %}
\ No newline at end of file
diff --git a/templates/problem/raw.html b/templates/problem/raw.html
index 4444cf2..a620d22 100644
--- a/templates/problem/raw.html
+++ b/templates/problem/raw.html
@@ -93,8 +93,8 @@
     {{ description|markdown|reference|absolutify(url)|str|safe }}
 </div>
 
-<script type="text/javascript" src="{{ static('mathjax_config.js') }}"></script>
-<script type="text/javascript" src="mathjax_config.js"></script>
+<script type="text/javascript" src="{{ static('mathjax3_config.js') }}"></script>
+<script type="text/javascript" src="mathjax3_config.js"></script>
 <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js?config=TeX-AMS_HTML"></script>
 <script type="text/javascript">
     MathJax.Hub.Register.StartupHook("End", function () {
diff --git a/templates/solution-preview.html b/templates/solution-preview.html
index 65935f9..82e7cb1 100644
--- a/templates/solution-preview.html
+++ b/templates/solution-preview.html
@@ -1,4 +1,4 @@
 {{ preview_data|markdown|reference|str|safe }}
 {% if REQUIRE_JAX %}
-    <div data-config="{{ static('mathjax_config.js') }}" class="require-mathjax-support"></div>
+    <div data-config="{{ static('mathjax3_config.js') }}" class="require-mathjax-support"></div>
 {% endif %}
\ No newline at end of file
diff --git a/templates/ticket/preview.html b/templates/ticket/preview.html
index 65935f9..82e7cb1 100644
--- a/templates/ticket/preview.html
+++ b/templates/ticket/preview.html
@@ -1,4 +1,4 @@
 {{ preview_data|markdown|reference|str|safe }}
 {% if REQUIRE_JAX %}
-    <div data-config="{{ static('mathjax_config.js') }}" class="require-mathjax-support"></div>
+    <div data-config="{{ static('mathjax3_config.js') }}" class="require-mathjax-support"></div>
 {% endif %}
\ No newline at end of file
diff --git a/templates/user/preview.html b/templates/user/preview.html
index 65935f9..82e7cb1 100644
--- a/templates/user/preview.html
+++ b/templates/user/preview.html
@@ -1,4 +1,4 @@
 {{ preview_data|markdown|reference|str|safe }}
 {% if REQUIRE_JAX %}
-    <div data-config="{{ static('mathjax_config.js') }}" class="require-mathjax-support"></div>
+    <div data-config="{{ static('mathjax3_config.js') }}" class="require-mathjax-support"></div>
 {% endif %}
\ No newline at end of file