diff --git a/reference/dom/domnode/appendchild.xml b/reference/dom/domnode/appendchild.xml
index 94877d7202..841c640fd4 100644
--- a/reference/dom/domnode/appendchild.xml
+++ b/reference/dom/domnode/appendchild.xml
@@ -20,6 +20,9 @@
    <methodname>DOMDocument::createTextNode</methodname> etc. or simply by using
    any other node.
   </para>
+  <para>
+   When using an existing node it will be moved.
+  </para>
  </refsect1>
  <refsect1 role="parameters">
   &reftitle.parameters;
diff --git a/reference/dom/domnode/insertbefore.xml b/reference/dom/domnode/insertbefore.xml
index 6988cebd55..287cda0e59 100644
--- a/reference/dom/domnode/insertbefore.xml
+++ b/reference/dom/domnode/insertbefore.xml
@@ -19,6 +19,9 @@
    If you plan to do further modifications on the appended child you must use
    the returned node.  
   </para>
+  <para>
+   When using an existing node it will be moved.
+  </para>
  </refsect1>
  <refsect1 role="parameters">
   &reftitle.parameters;