diff --git a/extension.json b/extension.json
index 664827dea..b16b8f9e9 100644
--- a/extension.json
+++ b/extension.json
@@ -27,7 +27,7 @@
 		"MediaWiki\\Extension\\Math\\WikiTexVC\\MMLmappings\\Util\\MMLComparator": "tests/phpunit/unit/WikiTexVC/MMLComparator.php"
 	},
 	"DefaultUserOptions": {
-		"math": "mathml",
+		"math": "native",
 		"math-popups": "1"
 	},
 	"ExtensionMessagesFiles": {
@@ -161,7 +161,8 @@
 			"description": "To access this at run-time, use MathConfig::getValidRenderingModes(). Do not use the non-normalized configuration directly.",
 			"value": [
 				"source",
-				"mathml"
+				"native",
+				"mathjax"
 			]
 		},
 		"MathEnableWikibaseDataType": {
diff --git a/src/MathConfig.php b/src/MathConfig.php
index 7bfaa2b76..78a1f0c17 100644
--- a/src/MathConfig.php
+++ b/src/MathConfig.php
@@ -162,7 +162,7 @@ class MathConfig {
 	 * @param string $default rendering mode to use by default on unrecognized input
 	 * @return string one of the self::MODE_* constants.
 	 */
-	public static function normalizeRenderingMode( $mode, string $default = self::MODE_MATHML ): string {
+	public static function normalizeRenderingMode( $mode, string $default = self::MODE_NATIVE_MML ): string {
 		if ( is_int( $mode ) ) {
 			$userOptionToMode = array_flip( self::MODES_TO_USER_OPTIONS );
 			return $userOptionToMode[$mode] ?? $default;
diff --git a/tests/phpunit/unit/MathConfigTest.php b/tests/phpunit/unit/MathConfigTest.php
index a7f1cec37..7ccca4916 100644
--- a/tests/phpunit/unit/MathConfigTest.php
+++ b/tests/phpunit/unit/MathConfigTest.php
@@ -53,6 +53,8 @@ class MathConfigTest extends TestCase {
 		yield 'mathml user option' => [ 5, MathConfig::MODE_MATHML ];
 		yield 'latexml user option' => [ 7, MathConfig::MODE_LATEXML ];
 		yield 'native user option' => [ 8, MathConfig::MODE_NATIVE_MML ];
+		yield 'mathjax option' => [ 9, MathConfig::MODE_NATIVE_JAX ];
+
 		yield 'source string' => [ 'source', MathConfig::MODE_SOURCE ];
 		yield 'mathml string' => [ 'mathml', MathConfig::MODE_MATHML ];
 		yield 'latexml string' => [ 'latexml', MathConfig::MODE_LATEXML ];
@@ -72,14 +74,13 @@ class MathConfigTest extends TestCase {
 	public function testGetValidRenderingModes() {
 		$mathConfig = $this->newMathConfig( [
 			'MathValidModes' => [
-				MathConfig::MODE_MATHML,
-				5,
+				MathConfig::MODE_NATIVE_MML,
 				MathConfig::MODE_SOURCE,
 				'this will be converted to mathml' ],
 		] );
 		$actualModes = $mathConfig->getValidRenderingModes();
 		$this->assertCount( 2, $actualModes );
-		$this->assertContains( MathConfig::MODE_MATHML, $actualModes );
+		$this->assertContains( MathConfig::MODE_NATIVE_MML, $actualModes );
 		$this->assertContains( MathConfig::MODE_SOURCE, $actualModes );
 	}