diff --git a/SpecialMathShowImage.php b/SpecialMathShowImage.php
index d919e38..5e70590 100644
--- a/SpecialMathShowImage.php
+++ b/SpecialMathShowImage.php
@@ -123,7 +123,7 @@ class SpecialMathShowImage extends SpecialPage {
 	 */
 	private function printSvgError( $msg ) {
 		global $wgMathDebug;
-		$result =  '<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 100 4"
+		$result =  '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 4"
  preserveAspectRatio="xMidYMid meet" >' .
 			'<text text-anchor="start" fill="red" y="2">' . htmlspecialchars( $msg ) . '</text></svg>';
 		if ( $wgMathDebug ) {