diff --git a/language/predefined/exception/construct.xml b/language/predefined/exception/construct.xml
index 1187b059d0..6a2acd9e39 100644
--- a/language/predefined/exception/construct.xml
+++ b/language/predefined/exception/construct.xml
@@ -50,6 +50,12 @@
     </varlistentry>
    </variablelist>
   </para>
+  <note>
+   <simpara>
+    Calling the constructor of class Exception from a subclass ignores the
+    default arguments, if the properties $code and $message are already set.
+   </simpara>
+  </note>
  </refsect1>
  
  <refsect1 role="changelog">