diff --git a/v2/doc/extending.html b/v2/doc/extending.html
index 47f855327..4f7e1e291 100644
--- a/v2/doc/extending.html
+++ b/v2/doc/extending.html
@@ -92,9 +92,9 @@
     this type. So, if Boost.Build sees "code.verbatim" in the list of
     sources, it knows that it's of type <tt>VERBATIM</tt>.</p>
 
-    <p>Lastly, you need to tool to convert verbatim files to C++. Say you've
-    stetched such a tool in Python. Then, you have to inform Boost.Build
-    about the tool. The Boost.Build concept which represent tool is
+    <p>Lastly, you need a tool to convert verbatim files to C++. Say you've
+    sketched such a tool in Python. Then, you have to inform Boost.Build
+    about the tool. The Boost.Build concept which represents a tool is
     <em>generator</em>.</p>
 
     <p>First, you say that generator 'inline-file' is able to convert