diff --git a/Layout/default/Device/Detail.php b/Layout/default/Device/Detail.php
index dd5e780c9..3eebd0ddd 100644
--- a/Layout/default/Device/Detail.php
+++ b/Layout/default/Device/Detail.php
@@ -408,16 +408,20 @@ foreach ($devicesall as $deviceall) {
                                             <tbody>
                                             <?php foreach ($devicesconfig->data as $config) :
                                                 $configfileCleartext = trim($config->config_cleartext);
+                                                $configfileCleartextExtension = pathinfo($configfileCleartext, PATHINFO_EXTENSION);
+                                                if (empty($configfileCleartextExtension))
+                                                    $configfileCleartextExtension = "txt";
                                                 $configfileCompressed = trim($config->config_compressed);
+                                                $configfileCompressedExtension = pathinfo($configfileCompressed, PATHINFO_EXTENSION);
                                                 $configid = $config->id;
                                                 if ($configfileCleartext && $configfileCompressed) :
 
                                                     $configLinks = '<a href="' . self::getUrl("Device", "api", ['do' => 'getconfig', 'id' => $configid, 'format' => 'txt', 'filename' => $configfileCleartext]) . '">
-                                                        TXT</a> / <a href="' . self::getUrl("Device", "api", ['do' => 'getconfig', 'id' => $configid, 'format' => 'xml', 'filename' => $configfileCompressed]) . '">
-                                                        XML</a>';
+                                                        '.strtoupper($configfileCleartextExtension).'</a> / <a href="' . self::getUrl("Device", "api", ['do' => 'getconfig', 'id' => $configid, 'format' => 'xml', 'filename' => $configfileCompressed]) . '">
+                                                        '.strtoupper($configfileCompressedExtension).'</a>';
                                                 elseif ($configfileCleartext || $configfileCompressed) :
                                                     $configLinks = '<a href="' . self::getUrl("Device", "api", ['do' => 'getconfig', 'id' => $configid, 'format' => 'txt', 'filename' => $configfileCleartext . $configfileCompressed]) . '">
-                                                        TXT</a>';
+                                                        '.strtoupper($configfileCleartextExtension).'</a>';
 
                                                 endif;
                                                 ?>