diff --git a/reference/iconv/functions/iconv-mime-encode.xml b/reference/iconv/functions/iconv-mime-encode.xml
index 6fec0c3cda..ba2c41f55c 100644
--- a/reference/iconv/functions/iconv-mime-encode.xml
+++ b/reference/iconv/functions/iconv-mime-encode.xml
@@ -1,5 +1,5 @@
 <?xml version='1.0' encoding='iso-8859-1'?>
-<!-- $Revision: 1.14 $ -->
+<!-- $Revision: 1.15 $ -->
 <refentry xml:id="function.iconv-mime-encode" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
  <refnamediv>
   <refname>iconv_mime_encode</refname>
@@ -71,7 +71,7 @@ Subject: =?ISO-8859-1?Q?Pr=FCfung_f=FCr?= Entwerfen von einer MIME kopfzeile
          <tbody>
           <row>
            <entry>scheme</entry>
-           <entry><type>boolean</type></entry>
+           <entry><type>string</type></entry>
            <entry>
             Specifies the method to encode a field value by. The value of
             this item may be either "B" or "Q", where "B" stands for