diff --git a/remarkbox/tests/test_render.py b/remarkbox/tests/test_render.py
index 0091618..a8eaea1 100644
--- a/remarkbox/tests/test_render.py
+++ b/remarkbox/tests/test_render.py
@@ -49,36 +49,26 @@ class TestRenderMarkdown(unittest.TestCase):
     def test_make_cleaner_from_custom_namespace(self):
         namespace = Namespace("russell.ballestrini.net")
         namespace.subscription_type = "production"
-        namespace.mathjax = True
+        namespace.katex = True
         namespace.link_protection = True
         cleaner = make_cleaner_from_namespace(namespace)
         self.assertTrue(cleaner.link_protection)
-        self.assertIn("script", cleaner.tags)
         self.assertEqual("russell.ballestrini.net", cleaner.absolute_domain)
         self.assertIn("russell.ballestrini.net", cleaner.whitelist_domains)
 
-    def test_mathjax_enabled_and_disabled(self):
-        raw_html = markdown_to_raw_html(SAMPLE_MARKDOWN)
+    def test_katex_enabled_and_disabled(self):
         namespace = Namespace("russell.ballestrini.net")
         namespace.subscription_type = "production"
 
-        # test mathjax enabled.
-        namespace.mathjax = True
+        # test katex enabled.
+        namespace.katex = True
         cleaner = make_cleaner_from_namespace(namespace)
-        self.assertTrue(cleaner.mathjax)
-        clean_html = clean_raw_html(raw_html, cleaner)
-        self.assertIn(
-            '<script type="math/tex; mode=display">y=x^2</script>', clean_html
-        )
+        self.assertTrue(cleaner.katex)
 
-        # test mathjax disabled.
-        namespace.mathjax = False
+        # test katex disabled.
+        namespace.katex = False
         cleaner = make_cleaner_from_namespace(namespace)
-        self.assertFalse(cleaner.mathjax)
-        clean_html = clean_raw_html(raw_html, cleaner)
-        self.assertNotIn(
-            '<script type="math/tex; mode=display">y=x^2</script>', clean_html
-        )
+        self.assertFalse(cleaner.katex)
 
     def test_link_protection_enabled(self):
         raw_html = markdown_to_raw_html(SAMPLE_MARKDOWN)