diff --git a/reference/var/functions/unserialize.xml b/reference/var/functions/unserialize.xml
index 7dfee0a6968a..966e1bcc9a8b 100644
--- a/reference/var/functions/unserialize.xml
+++ b/reference/var/functions/unserialize.xml
@@ -272,7 +272,7 @@ unserialize($serialized_object);
     the serialized &false; value. It is possible to catch this special case by
     comparing <parameter>data</parameter> with
     <literal>serialize(false)</literal> or by catching the issued
-    <constant>E_NOTICE</constant>.
+    <constant>E_WARNING</constant>.
    </para>
   </warning>
  </refsect1>