diff --git a/reference/datetime/datetime/construct.xml b/reference/datetime/datetime/construct.xml
index 7089623744..1ffadf5908 100644
--- a/reference/datetime/datetime/construct.xml
+++ b/reference/datetime/datetime/construct.xml
@@ -201,6 +201,7 @@ echo $date->format('Y-m-d H:i:sP') . "\n";
    <member><link linkend="ini.date.timezone">date.timezone</link> ini setting</member>
    <member><function>date_default_timezone_set</function></member>
    <member><function>DateTime::getLastErrors</function></member>
+   <member><function>checkdate</function></member>
   </simplelist>
  </refsect1>
 
diff --git a/reference/datetime/datetime/createfromformat.xml b/reference/datetime/datetime/createfromformat.xml
index deca4bf2a5..ed47749841 100644
--- a/reference/datetime/datetime/createfromformat.xml
+++ b/reference/datetime/datetime/createfromformat.xml
@@ -388,6 +388,7 @@ Format: !d; 1970-01-15 00:00:00
   <simplelist>
    <member><function>DateTime::__construct</function></member>
    <member><function>DateTime::getLastErrors</function></member>
+   <member><function>checkdate</function></member>
   </simplelist>
  </refsect1>
 </refentry>
diff --git a/reference/datetime/functions/date-parse-from-format.xml b/reference/datetime/functions/date-parse-from-format.xml
index 6a9db38b75..66eea79755 100644
--- a/reference/datetime/functions/date-parse-from-format.xml
+++ b/reference/datetime/functions/date-parse-from-format.xml
@@ -101,6 +101,7 @@ Array
   <para>
    <simplelist>
     <member><function>DateTime::createFromFormat</function></member>
+    <member><function>checkdate</function></member>
    </simplelist>
   </para>
  </refsect1>
diff --git a/reference/datetime/functions/date-parse.xml b/reference/datetime/functions/date-parse.xml
index 31360c6a6c..116210fe20 100644
--- a/reference/datetime/functions/date-parse.xml
+++ b/reference/datetime/functions/date-parse.xml
@@ -85,6 +85,7 @@ Array
   &reftitle.seealso;
   <para>
    <simplelist>
+    <member><function>checkdate</function></member>
     <member><function>getdate</function></member>
    </simplelist>
   </para>
diff --git a/reference/datetime/functions/mktime.xml b/reference/datetime/functions/mktime.xml
index c9eb578748..f5e942c64b 100644
--- a/reference/datetime/functions/mktime.xml
+++ b/reference/datetime/functions/mktime.xml
@@ -281,6 +281,7 @@ echo strftime("Last day in Feb 2000 is: %d", $lastday);
   &reftitle.seealso;
   <para>
    <simplelist>
+    <member><function>checkdate</function></member>
     <member><function>gmmktime</function></member>
     <member><function>date</function></member> 
     <member><function>time</function></member>
diff --git a/reference/datetime/functions/strptime.xml b/reference/datetime/functions/strptime.xml
index ea84df5321..96c53abc34 100644
--- a/reference/datetime/functions/strptime.xml
+++ b/reference/datetime/functions/strptime.xml
@@ -191,6 +191,7 @@ Array
     &reftitle.seealso;
     <para>
      <simplelist>
+      <member><function>checkdate</function></member>
       <member><function>strftime</function></member>
      </simplelist>
     </para>
diff --git a/reference/datetime/functions/strtotime.xml b/reference/datetime/functions/strtotime.xml
index e4d416cc5a..3326958660 100644
--- a/reference/datetime/functions/strtotime.xml
+++ b/reference/datetime/functions/strtotime.xml
@@ -221,6 +221,7 @@ if (($timestamp = strtotime($str)) === false) {
   <para>
    <simplelist>
     <member><methodname>DateTime::createFromFormat</methodname></member>
+    <member><function>checkdate</function></member>
     <member><function>strptime</function></member>
    </simplelist>
   </para>