diff --git a/lib/exe/opensearch.php b/lib/exe/opensearch.php
index 85087a80c217b8645630f0982243b8f61adb7d35..fe0b8583f6c12cdc11ff836e787deb15d71cbc25 100644
--- a/lib/exe/opensearch.php
+++ b/lib/exe/opensearch.php
@@ -29,7 +29,7 @@ header('Content-Type: application/opensearchdescription+xml; charset=utf-8');
 echo '<?xml version="1.0"?>'.NL;
 echo '<OpenSearchDescription xmlns="http://a9.com/-/spec/opensearch/1.1/">'.NL;
 echo '  <ShortName>'.htmlspecialchars($conf['title']).'</ShortName>'.NL;
-echo '  <Image type="image/x-icon">'.$ico.'</Image>'.NL;
+echo '  <Image width="16" height="16" type="image/x-icon">'.$ico.'</Image>'.NL;
 echo '  <Url type="text/html" template="'.DOKU_URL.DOKU_SCRIPT.'?do=search&amp;id={searchTerms}" />'.NL;
 echo '  <Url type="application/x-suggestions+json" template="'.
         DOKU_URL.'lib/exe/ajax.php?call=suggestions&amp;q={searchTerms}" />'.NL;