diff --git a/reference/datetime/functions/strtotime.xml b/reference/datetime/functions/strtotime.xml
index 4276287c40..e41d8e46e3 100644
--- a/reference/datetime/functions/strtotime.xml
+++ b/reference/datetime/functions/strtotime.xml
@@ -148,10 +148,17 @@ if (($timestamp = strtotime($str)) === false) {
 
  <refsect1 role="notes">
   &reftitle.notes;
+  <warning>
+   <para>
+    In PHP 5 prior to 5.2.7, requesting a given occurrence of a given
+    weekday in a month where that weekday was the first day of the
+    month would incorrectly add one week to the returned timestamp.
+   </para>
+  </warning>
   <warning>
    <para>
     In PHP 5 up to 5.0.2, <literal>"now"</literal> and other relative times
-    are wrongly computed from today's midnight. It differs from other
+    are wrongly computed from today's midnight. This differs from other
     versions where it is correctly computed from current time.
    </para>
   </warning>