diff --git a/reference/mysqli/constants.xml b/reference/mysqli/constants.xml
index 149e7ba69b..ef39d040a7 100644
--- a/reference/mysqli/constants.xml
+++ b/reference/mysqli/constants.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.7 $ -->
+<!-- $Revision: 1.8 $ -->
 <section id='mysqli.constants'>
  &reftitle.constants;
  
@@ -438,6 +438,13 @@
       </entry>
      <entry>No more data available for bind variable</entry>
      </row>
+     <row>
+      <entry>
+       <constant id='constantmysqli-data-truncated'>MYSQLI_DATA_TRUNCATED</constant>
+       (<link linkend='language.types.integer'>integer</link>)
+      </entry>
+     <entry>Data truncation occurred. Available since PHP 5.1.0.</entry>
+     </row>
     </tbody>
    </tgroup>
   </table>
diff --git a/reference/mysqli/functions/mysqli-stmt-fetch.xml b/reference/mysqli/functions/mysqli-stmt-fetch.xml
index f5f6dd3242..0a5546a713 100644
--- a/reference/mysqli/functions/mysqli-stmt-fetch.xml
+++ b/reference/mysqli/functions/mysqli-stmt-fetch.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.7 $ -->
+<!-- $Revision: 1.8 $ -->
 <refentry id="function.mysqli-stmt-fetch">
  <refnamediv>
   <refname>mysqli_stmt_fetch</refname>
@@ -55,9 +55,14 @@
       <entry>&false;</entry>
       <entry>Error occured</entry>
      </row>
+     <row>
+      <entry>MYSQLI_DATA_TRUNCATED</entry>
+      <entry>Data truncation occurred (since PHP 5.1.0)</entry>
+     </row>
      <row>
       <entry><literal>&null;</literal></entry>
-      <entry>No more rows/data exists</entry>
+      <entry>No more rows/data exists (or data truncation occurred, in PHP
+       5.0.x)</entry>
      </row>
     </tbody>
    </tgroup>