diff --git a/reference/math/functions/abs.xml b/reference/math/functions/abs.xml
index 2b702ab77f..513ce21674 100644
--- a/reference/math/functions/abs.xml
+++ b/reference/math/functions/abs.xml
@@ -48,9 +48,9 @@
     <programlisting role="php">
 <![CDATA[
 <?php
-$abs = abs(-4.2); // $abs = 4.2; (double/float)
-$abs2 = abs(5);   // $abs2 = 5; (integer)
-$abs3 = abs(-5);  // $abs3 = 5; (integer)
+echo abs(-4.2); // 4.2 (double/float)
+echo abs(5);    // 5 (integer)
+echo abs(-5);   // 5 (integer)
 ?>
 ]]>
     </programlisting>