diff --git a/language/types/string.xml b/language/types/string.xml
index f849c5cb94..518fb3d74f 100644
--- a/language/types/string.xml
+++ b/language/types/string.xml
@@ -780,7 +780,8 @@ $str[strlen($str)-1] = 'e';
 
    <note>
     <para>
-     Accessing variables of other types using <literal>[]</literal> or
+     Accessing variables of other types (not including arrays or objects
+     implementing the appropriate interfaces) using <literal>[]</literal> or
      <literal>{}</literal> silently returns &null;.
     </para>
    </note>