diff --git a/doc/src/extending.xml b/doc/src/extending.xml
index 8b7811dc7..e03a22c2a 100644
--- a/doc/src/extending.xml
+++ b/doc/src/extending.xml
@@ -469,7 +469,7 @@ exe codegen : codegen.cpp class_template.verbatim usage.verbatim ;
   <section id="bbv2.extending.targets">
     <title>Target types</title>
       <para>The first thing we did in the <link
-          linkend="bbv2.extender.intro">intruduction</link> was declaring a
+          linkend="bbv2.extender.intro">introduction</link> was declaring a
       new target type:
 <programlisting>
 import type ;