diff --git a/reference/var/functions/unserialize.xml b/reference/var/functions/unserialize.xml
index 26bd53bfd530..8eae150a4100 100644
--- a/reference/var/functions/unserialize.xml
+++ b/reference/var/functions/unserialize.xml
@@ -212,8 +212,8 @@ ini_set('unserialize_callback_func', 'mycallback'); // set your callback_functio
 
 function mycallback($classname) 
 {
-    // just include a file containing your classdefinition
-    // you get $classname to figure out which classdefinition is required
+    // just include a file containing your class definition
+    // you get $classname to figure out which class definition is required
 }
 ?>
 ]]>