diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index 6ffd88ea45b..b63f9d72f26 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -8389,7 +8389,7 @@ function dol_mimetype($file, $default = 'application/octet-stream', $mode = 0)
 	// Video
 	if (preg_match('/\.mp4$/i', $tmpfile)) { $mime = 'video/mp4'; $imgmime = 'video.png'; $famime = 'file-video-o'; }
 	if (preg_match('/\.ogv$/i', $tmpfile)) { $mime = 'video/ogg'; $imgmime = 'video.png'; $famime = 'file-video-o'; }
-	if (preg_match('/\.(webm|wbm)$/i', $tmpfile)) { $mime = 'video/webm'; $imgmime = 'video.png'; $famime = 'file-video-o'; }
+	if (preg_match('/\.webm$/i', $tmpfile)) { $mime = 'video/webm'; $imgmime = 'video.png'; $famime = 'file-video-o'; }
 	if (preg_match('/\.avi$/i', $tmpfile)) { $mime = 'video/x-msvideo'; $imgmime = 'video.png'; $famime = 'file-video-o'; }
 	if (preg_match('/\.divx$/i', $tmpfile)) { $mime = 'video/divx'; $imgmime = 'video.png'; $famime = 'file-video-o'; }
 	if (preg_match('/\.xvid$/i', $tmpfile)) { $mime = 'video/xvid'; $imgmime = 'video.png'; $famime = 'file-video-o'; }