diff --git a/MathMathML.php b/MathMathML.php
index 722dfc9..40bc77c 100644
--- a/MathMathML.php
+++ b/MathMathML.php
@@ -403,7 +403,8 @@ class MathMathML extends MathRenderer {
 
 		return Xml::element( 'img', $this->getAttributes( 'span', $attribs, [
 			'aria-hidden' => 'true',
-			'style' => $this->mathoidStyle
+			'style' => $this->mathoidStyle,
+			'alt' => $this->tex
 		] ) );
 	}