diff --git a/language/oop.xml b/language/oop.xml
index a3457c1b91..5905dcf90f 100644
--- a/language/oop.xml
+++ b/language/oop.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.51 $ -->
+<!-- $Revision: 1.52 $ -->
  <chapter id="language.oop">
   <title>Classes and Objects</title>
 
@@ -241,7 +241,7 @@ $cart->$myvar = array("10" => 1);
     has all variables and functions of the base class (this is
     called 'inheritance' despite the fact that nobody died) and what
     you add in the extended definition. It is not possible to
-    substract from a class, that is, to undefine any existing 
+    subtract from a class, that is, to undefine any existing 
     functions or variables. An extended class is always dependent
     on a single base class, that is, multiple inheritance is
     not supported. Classes are extended using the keyword 'extends'.