diff --git a/reference/datetime/dateinterval/construct.xml b/reference/datetime/dateinterval/construct.xml
index 2538a24000..411fff9906 100644
--- a/reference/datetime/dateinterval/construct.xml
+++ b/reference/datetime/dateinterval/construct.xml
@@ -9,7 +9,7 @@
 
  <refsect1 role="description">
   &reftitle.description;
-  <constructorsynopsis>
+  <constructorsynopsis role="oop">
    <modifier>public</modifier> <methodname>DateInterval::__construct</methodname>
    <methodparam><type>string</type><parameter>interval_spec</parameter></methodparam>
   </constructorsynopsis>
diff --git a/reference/datetime/dateperiod/construct.xml b/reference/datetime/dateperiod/construct.xml
index 2d157043d6..0b2ede37ca 100644
--- a/reference/datetime/dateperiod/construct.xml
+++ b/reference/datetime/dateperiod/construct.xml
@@ -9,21 +9,21 @@
 
  <refsect1 role="description">
   &reftitle.description;
-  <constructorsynopsis>
+  <constructorsynopsis role="oop">
    <modifier>public</modifier> <methodname>DatePeriod::__construct</methodname>
    <methodparam><type>DateTime</type><parameter>start</parameter></methodparam>
    <methodparam><type>DateInterval</type><parameter>interval</parameter></methodparam>
    <methodparam><type>int</type><parameter>recurrences</parameter></methodparam>
    <methodparam choice="opt"><type>int</type><parameter>options</parameter></methodparam>
   </constructorsynopsis>
-  <constructorsynopsis>
+  <constructorsynopsis role="oop">
    <modifier>public</modifier> <methodname>DatePeriod::__construct</methodname>
    <methodparam><type>DateTime</type><parameter>start</parameter></methodparam>
    <methodparam><type>DateInterval</type><parameter>interval</parameter></methodparam>
    <methodparam><type>DateTime</type><parameter>end</parameter></methodparam>
    <methodparam choice="opt"><type>int</type><parameter>options</parameter></methodparam>
   </constructorsynopsis>
-  <constructorsynopsis>
+  <constructorsynopsis role="oop">
    <modifier>public</modifier> <methodname>DatePeriod::__construct</methodname>
    <methodparam><type>string</type><parameter>isostr</parameter></methodparam>
    <methodparam choice="opt"><type>int</type><parameter>options</parameter></methodparam>
diff --git a/reference/datetime/datetime/construct.xml b/reference/datetime/datetime/construct.xml
index 87b8ebac43..8e8d6a3057 100644
--- a/reference/datetime/datetime/construct.xml
+++ b/reference/datetime/datetime/construct.xml
@@ -10,7 +10,7 @@
  <refsect1 role="description">
   &reftitle.description;
   <para>&style.oop;</para>
-  <constructorsynopsis>
+  <constructorsynopsis role="oop">
    <modifier>public</modifier> <methodname>DateTime::__construct</methodname>
    <methodparam choice="opt"><type>string</type><parameter>time</parameter><initializer>"now"</initializer></methodparam>
    <methodparam choice="opt"><type>DateTimeZone</type><parameter>timezone</parameter><initializer>&null;</initializer></methodparam>
diff --git a/reference/datetime/datetimezone/construct.xml b/reference/datetime/datetimezone/construct.xml
index 05ee696dd9..29fadde16b 100644
--- a/reference/datetime/datetimezone/construct.xml
+++ b/reference/datetime/datetimezone/construct.xml
@@ -10,7 +10,7 @@
  <refsect1 role="description">
   &reftitle.description;
   <para>&style.oop;</para>
-  <constructorsynopsis>
+  <constructorsynopsis role="oop">
    <modifier>public</modifier> <methodname>DateTimeZone::__construct</methodname>
    <methodparam><type>string</type><parameter>timezone</parameter></methodparam>
   </constructorsynopsis>