diff --git a/en_US.ISO8859-1/books/porters-handbook/versions/chapter.xml b/en_US.ISO8859-1/books/porters-handbook/versions/chapter.xml
index 42d37d12b8..fdd9ef06bb 100644
--- a/en_US.ISO8859-1/books/porters-handbook/versions/chapter.xml
+++ b/en_US.ISO8859-1/books/porters-handbook/versions/chapter.xml
@@ -262,7 +262,8 @@
 	    <entry>1200025</entry>
 	    <entry><revnumber>315430</revnumber></entry>
 	    <entry>March 16, 2017</entry>
-	    <entry>12.0-CURRENT after major upgrade of eMMC subsystem.</entry>
+	    <entry>12.0-CURRENT after addition of the
+	      <filename>&lt;dev/mmc/mmc_ioctl.h&gt;</filename> header.</entry>
 	  </row>
 
 	  <row>