diff --git a/en_US.ISO8859-1/books/porters-handbook/versions.xml b/en_US.ISO8859-1/books/porters-handbook/versions.xml
index 26d953e308..47f3ed3bf2 100644
--- a/en_US.ISO8859-1/books/porters-handbook/versions.xml
+++ b/en_US.ISO8859-1/books/porters-handbook/versions.xml
@@ -4288,7 +4288,7 @@ it was never committed:
 <row>
   <entry>901505</entry>
   <entry>June 13, 2013</entry>
-  <entry>9.1-STABLE after fixes in ctfmerge boostrapping
+  <entry>9.1-STABLE after fixes in ctfmerge bootstrapping
     (rev <svnref>249243</svnref>).</entry>
 </row>