diff --git a/reference/filesystem/functions/parse-ini-file.xml b/reference/filesystem/functions/parse-ini-file.xml
index 9d2a4b5b6b..bf3aff3250 100644
--- a/reference/filesystem/functions/parse-ini-file.xml
+++ b/reference/filesystem/functions/parse-ini-file.xml
@@ -287,7 +287,7 @@ echo '(loaded) magic_quotes_gpc = ' . yesno(get_cfg_var('magic_quotes_gpc')) . P
     There are reserved words which must not be used as keys for
     ini files.  These include: null, yes, no, true, false, on, off, none.
     Values null, no and false results in "", yes and true results in "1".
-    Characters <literal>{}|&amp;~![()^"</literal> must not be used anywhere in
+    Characters <literal>?{}|&amp;~![()^"</literal> must not be used anywhere in
     the key and have a special meaning in the value.
    </simpara>
   </note>