diff --git a/htdocs/core/lib/files.lib.php b/htdocs/core/lib/files.lib.php
index b480184808f..290ce015543 100644
--- a/htdocs/core/lib/files.lib.php
+++ b/htdocs/core/lib/files.lib.php
@@ -264,6 +264,7 @@ function dol_mimetype($file,$default='application/octet-stream',$mode=0)
     if (preg_match('/\.(h)$/i',$tmpfile))                      { $mime='text/plain'; $imgmime='text.png'; $srclang='h'; }
     if (preg_match('/\.(java|jsp)$/i',$tmpfile))               { $mime='text/plain'; $imgmime='text.png'; $srclang='java'; }
 	if (preg_match('/\.php([0-9]{1})?$/i',$tmpfile))           { $mime='text/plain'; $imgmime='php.png'; $srclang='php'; }
+	if (preg_match('/\.phtml$/i',$tmpfile))                    { $mime='text/plain'; $imgmime='php.png'; $srclang='php'; }
 	if (preg_match('/\.(pl|pm)$/i',$tmpfile))                  { $mime='text/plain'; $imgmime='pl.png'; $srclang='perl'; }
 	if (preg_match('/\.sql$/i',$tmpfile))                      { $mime='text/plain'; $imgmime='text.png'; $srclang='sql'; }
 	if (preg_match('/\.js$/i',$tmpfile))                       { $mime='text/x-javascript'; $imgmime='jscript.png'; $srclang='js'; }