diff --git a/include/functions.inc.php b/include/functions.inc.php
index 6e9edde78..91d337373 100644
--- a/include/functions.inc.php
+++ b/include/functions.inc.php
@@ -440,13 +440,13 @@ function convertProblemChars($str)
    'N' => '/Ñ/',
    'n' => '/ñ/',
    'O' => '/Ò|Ó|Ô|Õ/',
-   'Oe' => '/&Ouml/',
+   'Oe' => '/Ö/',
    'o' => '/ò|ó|ô|õ/',
-   'oe' => '/&ouml/',
+   'oe' => '/ö/',
    'U' => '/Ù|Ú|Û/',
-   'Ue' => '/&Uuml/',
+   'Ue' => '/Ü/',
    'u' => '/ù|ú|û/',
-   'ue' => '/&uuml/',
+   'ue' => '/ü/',
    'Y' => '/Ý/',
    'y' => '/ý|ÿ/',
    'a.' => '/ª/',