diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index c7c517a5d2f..17355e38a10 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -5980,7 +5980,7 @@ function img_mime($file, $titlealt = '', $morecss = '')
 	require_once DOL_DOCUMENT_ROOT.'/core/lib/files.lib.php';
 
 	$mimetype = dol_mimetype($file, '', 1);
-	$mimeimg = dol_mimetype($file, '', 2);
+	//$mimeimg = dol_mimetype($file, '', 2);
 	$mimefa = dol_mimetype($file, '', 4);
 
 	if (empty($titlealt)) {
@@ -12372,6 +12372,11 @@ function dol_mimetype($file, $default = 'application/octet-stream', $mode = 0)
 		$famime = 'file-alt';
 	}
 
+	if ($famime == 'file-o') {
+		// file-o seems to not work in fontawesome 5
+		$famime = 'file';
+	}
+
 	// Return mimetype string
 	switch ((int) $mode) {
 		case 1: