diff --git a/functions/imap.xml b/functions/imap.xml
index ba514bbab8..394ef1d38a 100644
--- a/functions/imap.xml
+++ b/functions/imap.xml
@@ -1770,7 +1770,7 @@ imap_close($mbox);
     <title>Description</title>
     <funcsynopsis>
      <funcprototype>
-      <funcdef>array <function>imap_header_decode</function></funcdef>
+      <funcdef>array <function>imap_mime_header_decode</function></funcdef>
       <paramdef>string <parameter>text</parameter></paramdef>
      </funcprototype>
     </funcsynopsis>